Firesong and Sunspeaker (Commander) - Expensive Burn

Firesong and Sunspeaker
Rank #589
84decks
As CommanderAs CardAverage DeckDecks
Bracket
All12345
Budget
Any$$$$
Background image for Branching Out – Can You Build Boros Without Going Aggro?
Arnaud Gompertz
Jul 9, 2025
Arnaud Gompertz
Branching Out – Can You Build Boros Without Going Aggro?
What are some out-of-the-box ways to brew Boros without going aggro? Let Arnaud shift your red-white mindset with some unique new strategies.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
New Cards
High Synergy Cards
Top Cards
Game Changers
Creatures
Instants
Sorceries
Utility Artifacts
Enchantments
Planeswalkers
Utility Lands
Mana Artifacts
Lands
Back to Top
Hexing Squelcher
33%inclusion3 decks9 decks
26%synergy
Spinerock Tyrant
11%inclusion1 decks9 decks
10%synergy
High Synergy Cards
Star of Extinction
83%inclusion70 decks84 decks
82%synergy
Aetherflux Reservoir
80%inclusion67 decks84 decks
76%synergy
Lightning Helix
82%inclusion69 decks84 decks
73%synergy
Chain Reaction
73%inclusion61 decks84 decks
69%synergy
Solphim, Mayhem Dominus
71%inclusion60 decks84 decks
67%synergy
Heartflame Duelist
68%inclusion57 decks84 decks
65%synergy
Olórin's Searing Light
65%inclusion55 decks84 decks
62%synergy
Blasphemous Act
94%inclusion79 decks84 decks
61%synergy
Price of Progress
62%inclusion52 decks84 decks
61%synergy
Radiant Scrollwielder
62%inclusion52 decks84 decks
59%synergy
Top Cards
Boros Charm
85%inclusion71 decks84 decks
36%synergy
Lightning Bolt
67%inclusion56 decks84 decks
56%synergy
Deflecting Palm
67%inclusion56 decks84 decks
48%synergy
Rip Apart
64%inclusion54 decks84 decks
51%synergy
Brash Taunter
62%inclusion52 decks84 decks
56%synergy
Rem Karolus, Stalwart Slayer
60%inclusion50 decks84 decks
56%synergy
Deafening Clarion
58%inclusion49 decks84 decks
55%synergy
Swords to Plowshares
56%inclusion47 decks84 decks
-10%synergy
Sunforger
55%inclusion46 decks84 decks
40%synergy
Sacred Fire
52%inclusion44 decks84 decks
51%synergy
Game Changers
Smothering Tithe
63%inclusion53 decks84 decks
44%synergy
Jeska's Will
62%inclusion52 decks84 decks
46%synergy
Teferi's Protection
55%inclusion46 decks84 decks
38%synergy
Ancient Tomb
46%inclusion39 decks84 decks
39%synergy
Enlightened Tutor
37%inclusion31 decks84 decks
21%synergy
The One Ring
24%inclusion20 decks84 decks
18%synergy
Gamble
14%inclusion12 decks84 decks
8%synergy
Farewell
11%inclusion9 decks84 decks
0%synergy
Grim Monolith
8.3%inclusion7 decks84 decks
7%synergy
Underworld Breach
7.1%inclusion6 decks84 decks
5%synergy
Creatures
Gisela, Blade of Goldnight
50%inclusion42 decks84 decks
37%synergy
Esper Sentinel
46%inclusion39 decks84 decks
21%synergy
Torbran, Thane of Red Fell
46%inclusion39 decks84 decks
43%synergy
Toralf, God of Fury
45%inclusion38 decks84 decks
44%synergy
Neheb, the Eternal
43%inclusion36 decks84 decks
40%synergy
Phyrexian Vindicator
42%inclusion35 decks84 decks
40%synergy
Balefire Liege
42%inclusion35 decks84 decks
35%synergy
Boros Reckoner
40%inclusion34 decks84 decks
36%synergy
Treasonous Ogre
38%inclusion32 decks84 decks
37%synergy
Stuffy Doll
37%inclusion31 decks84 decks
35%synergy
Guttersnipe
37%inclusion31 decks84 decks
31%synergy
Storm-Kiln Artist
33%inclusion28 decks84 decks
27%synergy
Pinnacle Monk
29%inclusion22 decks75 decks
24%synergy
Felidar Sovereign
26%inclusion22 decks84 decks
25%synergy
Twinflame Tyrant
24%inclusion12 decks50 decks
22%synergy
Imodane, the Pyrohammer
24%inclusion20 decks84 decks
23%synergy
Longshot, Rebel Bowman
23%inclusion3 decks13 decks
21%synergy
Taii Wakeen, Perfect Shot
21%inclusion18 decks84 decks
20%synergy
Young Pyromancer
19%inclusion16 decks84 decks
15%synergy
Fire Servant
19%inclusion16 decks84 decks
18%synergy
Crystal Barricade
18%inclusion9 decks50 decks
16%synergy
Solemn Simulacrum
15%inclusion13 decks84 decks
-8%synergy
Urabrask
15%inclusion13 decks84 decks
14%synergy
Ojer Axonil, Deepest Might
14%inclusion12 decks84 decks
13%synergy
Screaming Nemesis
14%inclusion10 decks71 decks
13%synergy
Rhox Faithmender
13%inclusion11 decks84 decks
12%synergy
Birgi, God of Storytelling
13%inclusion11 decks84 decks
10%synergy
Stormwild Capridor
12%inclusion10 decks84 decks
12%synergy
Rune-Tail, Kitsune Ascendant
12%inclusion10 decks84 decks
11%synergy
Dualcaster Mage
12%inclusion10 decks84 decks
10%synergy
Electro, Assaulting Battery
11%inclusion2 decks18 decks
9%synergy
Velomachus Lorehold
11%inclusion9 decks84 decks
9%synergy
Chandra's Incinerator
11%inclusion9 decks84 decks
9%synergy
Spitemare
11%inclusion9 decks84 decks
10%synergy
Ashling, Flame Dancer
11%inclusion8 decks76 decks
9%synergy
Witch Enchanter
10%inclusion8 decks77 decks
-2%synergy
Haliya, Guided by Light
10%inclusion2 decks20 decks
0%synergy
Archivist of Oghma
10%inclusion8 decks84 decks
4%synergy
Truefire Captain
10%inclusion8 decks84 decks
8%synergy
Keeper of the Accord
10%inclusion8 decks84 decks
2%synergy
Lightning, Army of One
9.1%inclusion2 decks22 decks
3%synergy
Charmbreaker Devils
8.3%inclusion7 decks84 decks
8%synergy
Electrostatic Field
8.3%inclusion7 decks84 decks
6%synergy
Mangara, the Diplomat
8.3%inclusion7 decks84 decks
2%synergy
Dockside Extortionist
7.1%inclusion6 decks84 decks
6%synergy
Burnished Hart
7.1%inclusion6 decks84 decks
3%synergy
Satyr Firedancer
7.1%inclusion6 decks84 decks
7%synergy
Blaze Commando
7.1%inclusion6 decks84 decks
7%synergy
Tajic, Legion's Edge
7.1%inclusion6 decks84 decks
3%synergy
Serra Ascendant
6.0%inclusion5 decks84 decks
2%synergy
Instants
Warleader's Helix
44%inclusion37 decks84 decks
43%synergy
Delayed Blast Fireball
43%inclusion36 decks84 decks
41%synergy
Revitalize
42%inclusion35 decks84 decks
40%synergy
Deflecting Swat
40%inclusion34 decks84 decks
25%synergy
Path to Exile
39%inclusion33 decks84 decks
-17%synergy
Starstorm
38%inclusion32 decks84 decks
37%synergy
Aurelia's Fury
35%inclusion29 decks84 decks
31%synergy
Intimidation Bolt
30%inclusion25 decks84 decks
28%synergy
Abrade
30%inclusion25 decks84 decks
17%synergy
Reverberate
29%inclusion24 decks84 decks
27%synergy
Electrodominance
27%inclusion23 decks84 decks
27%synergy
Flawless Maneuver
27%inclusion23 decks84 decks
9%synergy
Invoke the Divine
27%inclusion23 decks84 decks
26%synergy
Valakut Awakening
23%inclusion19 decks84 decks
16%synergy
Comet Storm
21%inclusion18 decks84 decks
20%synergy
Chaos Warp
18%inclusion15 decks84 decks
-13%synergy
Thrill of Possibility
18%inclusion15 decks84 decks
7%synergy
Return the Favor
17%inclusion14 decks84 decks
14%synergy
Volcanic Fallout
17%inclusion14 decks84 decks
16%synergy
Big Score
15%inclusion13 decks84 decks
5%synergy
Generous Gift
15%inclusion13 decks84 decks
-18%synergy
Restoration Magic
14%inclusion3 decks21 decks
4%synergy
Seething Song
13%inclusion11 decks84 decks
10%synergy
Increasing Vengeance
13%inclusion11 decks84 decks
13%synergy
Wear // Tear
13%inclusion11 decks84 decks
-8%synergy
Heartwarming Redemption
11%inclusion9 decks84 decks
9%synergy
Arcbond
11%inclusion9 decks84 decks
10%synergy
Dawn's Truce
10%inclusion7 decks68 decks
0%synergy
Fiery Annihilation
10%inclusion5 decks49 decks
10%synergy
Pyroblast
10%inclusion8 decks84 decks
5%synergy
Heliod's Intervention
10%inclusion8 decks84 decks
8%synergy
Hurloon Battle Hymn
8.3%inclusion7 decks84 decks
8%synergy
Reiterate
8.3%inclusion7 decks84 decks
8%synergy
Tibalt's Trickery
8.3%inclusion7 decks84 decks
3%synergy
Risk Factor
8.3%inclusion7 decks84 decks
8%synergy
Shock
8.3%inclusion7 decks84 decks
7%synergy
Magmaquake
8.3%inclusion7 decks84 decks
8%synergy
Fault Line
8.3%inclusion7 decks84 decks
8%synergy
Lorehold Command
7.1%inclusion6 decks84 decks
5%synergy
Divine Offering
7.1%inclusion6 decks84 decks
7%synergy
Stroke of Midnight
7.1%inclusion6 decks84 decks
-10%synergy
Fork
7.1%inclusion6 decks84 decks
7%synergy
Red Elemental Blast
7.1%inclusion6 decks84 decks
2%synergy
Reprieve
7.1%inclusion6 decks84 decks
-1%synergy
Untimely Malfunction
6.6%inclusion4 decks61 decks
-5%synergy
Legion Leadership
6.5%inclusion5 decks77 decks
-11%synergy
Ritual of Rejuvenation
6.0%inclusion5 decks84 decks
6%synergy
Unexpected Windfall
6.0%inclusion5 decks84 decks
-2%synergy
Demand Answers
6.0%inclusion5 decks84 decks
-3%synergy
Riot Control
6.0%inclusion5 decks84 decks
5%synergy
Sorceries
Boltwave
49%inclusion24 decks49 decks
47%synergy
Rolling Earthquake
49%inclusion41 decks84 decks
48%synergy
Mana Geyser
46%inclusion39 decks84 decks
42%synergy
Earthquake
40%inclusion34 decks84 decks
39%synergy
Storm's Wrath
35%inclusion29 decks84 decks
34%synergy
Grab the Prize
34%inclusion21 decks61 decks
32%synergy
Fiery Confluence
31%inclusion26 decks84 decks
29%synergy
Hour of Devastation
31%inclusion26 decks84 decks
31%synergy
Thrilling Discovery
30%inclusion25 decks84 decks
24%synergy
Wheel of Misfortune
29%inclusion24 decks84 decks
26%synergy
Anger of the Gods
27%inclusion23 decks84 decks
27%synergy
Mizzium Mortars
27%inclusion23 decks84 decks
26%synergy
Wheel of Fortune
27%inclusion23 decks84 decks
25%synergy
Jaya's Immolating Inferno
24%inclusion20 decks84 decks
23%synergy
Acidic Soil
23%inclusion19 decks84 decks
22%synergy
Molten Disaster
21%inclusion18 decks84 decks
21%synergy
Mizzix's Mastery
21%inclusion18 decks84 decks
20%synergy
Tectonic Hazard
21%inclusion18 decks84 decks
19%synergy
Brotherhood's End
21%inclusion18 decks84 decks
21%synergy
Prisoner's Dilemma
21%inclusion18 decks84 decks
20%synergy
Crackle with Power
20%inclusion17 decks84 decks
19%synergy
Vandalblast
19%inclusion16 decks84 decks
3%synergy
Shatterskull Smashing
19%inclusion16 decks84 decks
16%synergy
Faithless Looting
17%inclusion14 decks84 decks
1%synergy
End the Festivities
13%inclusion11 decks84 decks
11%synergy
Pyroclasm
13%inclusion11 decks84 decks
13%synergy
Reforge the Soul
13%inclusion11 decks84 decks
11%synergy
Burn Down the House
12%inclusion10 decks84 decks
12%synergy
Flame Rift
12%inclusion10 decks84 decks
11%synergy
Survival Cache
11%inclusion9 decks84 decks
10%synergy
Sanctify
11%inclusion9 decks84 decks
10%synergy
Brightflame
10%inclusion8 decks84 decks
9%synergy
Into the Fire
10%inclusion8 decks84 decks
9%synergy
Snort
9.1%inclusion2 decks22 decks
8%synergy
Suplex
9.1%inclusion2 decks22 decks
7%synergy
Will of the Jeskai
8.7%inclusion2 decks23 decks
8%synergy
Browbeat
8.3%inclusion7 decks84 decks
8%synergy
Secret Rendezvous
8.3%inclusion7 decks84 decks
4%synergy
Solar Blaze
8.3%inclusion7 decks84 decks
7%synergy
Reconstruct History
8.3%inclusion7 decks84 decks
5%synergy
Banefire
7.1%inclusion6 decks84 decks
7%synergy
Cut a Deal
7.1%inclusion6 decks84 decks
0%synergy
Sundering Eruption
6.5%inclusion5 decks77 decks
1%synergy
Incite Rebellion
6.0%inclusion5 decks84 decks
6%synergy
Idyllic Tutor
6.0%inclusion5 decks84 decks
3%synergy
Blazing Volley
6.0%inclusion5 decks84 decks
4%synergy
Past in Flames
6.0%inclusion5 decks84 decks
5%synergy
Reckless Endeavor
6.0%inclusion5 decks84 decks
5%synergy
Romantic Rendezvous
5.0%inclusion1 decks20 decks
5%synergy
Utility Artifacts
Well of Lost Dreams
46%inclusion39 decks84 decks
43%synergy
Ruby Medallion
45%inclusion38 decks84 decks
40%synergy
Mithril Coat
43%inclusion36 decks84 decks
32%synergy
Primal Amulet
43%inclusion36 decks84 decks
42%synergy
Darksteel Plate
26%inclusion22 decks84 decks
22%synergy
The Wind Crystal
23%inclusion5 decks22 decks
18%synergy
Lightning Greaves
23%inclusion19 decks84 decks
-6%synergy
Caduceus, Staff of Hermes
17%inclusion12 decks72 decks
10%synergy
Cosmos Elixir
17%inclusion14 decks84 decks
16%synergy
Swiftfoot Boots
15%inclusion13 decks84 decks
-28%synergy
Alhammarret's Archive
13%inclusion11 decks84 decks
12%synergy
Archaeomancer's Map
13%inclusion11 decks84 decks
6%synergy
Isochron Scepter
12%inclusion10 decks84 decks
11%synergy
Wayfarer's Bauble
10%inclusion8 decks84 decks
-2%synergy
Mind's Eye
8.3%inclusion7 decks84 decks
7%synergy
Blazing Sunsteel
7.1%inclusion6 decks84 decks
6%synergy
Howling Mine
6.0%inclusion5 decks84 decks
5%synergy
Hammer of Nazahn
6.0%inclusion5 decks84 decks
-4%synergy
Enchantments
Fiery Emancipation
50%inclusion42 decks84 decks
45%synergy
Land Tax
49%inclusion41 decks84 decks
38%synergy
Repercussion
46%inclusion39 decks84 decks
44%synergy
Arcane Bombardment
26%inclusion22 decks84 decks
25%synergy
Double Vision
26%inclusion22 decks84 decks
24%synergy
Trouble in Pairs
24%inclusion20 decks84 decks
15%synergy
Mark of Asylum
21%inclusion18 decks84 decks
21%synergy
Descent into Avernus
19%inclusion16 decks84 decks
16%synergy
Test of Endurance
19%inclusion16 decks84 decks
18%synergy
Fiery Inscription
17%inclusion14 decks84 decks
14%synergy
Rite of the Dragoncaller
16%inclusion8 decks49 decks
15%synergy
Artist's Talent
16%inclusion11 decks68 decks
14%synergy
Light of Sanction
13%inclusion11 decks84 decks
13%synergy
Dictate of the Twin Gods
12%inclusion10 decks84 decks
10%synergy
City on Fire
11%inclusion9 decks84 decks
5%synergy
Ghostly Prison
11%inclusion9 decks84 decks
2%synergy
Pain for All
10%inclusion2 decks20 decks
8%synergy
Furnace of Rath
10%inclusion8 decks84 decks
9%synergy
Virtue of Courage
10%inclusion8 decks84 decks
8%synergy
Dawn of Hope
10%inclusion8 decks84 decks
8%synergy
Pariah
7.1%inclusion6 decks84 decks
6%synergy
Braid of Fire
6.0%inclusion5 decks84 decks
5%synergy
Timely Ward
6.0%inclusion5 decks84 decks
3%synergy
Fated Firepower
5.0%inclusion1 decks20 decks
4%synergy
Planeswalkers
Chandra, Hope's Beacon
17%inclusion14 decks84 decks
16%synergy
Jaya Ballard
14%inclusion12 decks84 decks
14%synergy
Chandra, Torch of Defiance
7.1%inclusion6 decks84 decks
5%synergy
Utility Lands
War Room
42%inclusion35 decks84 decks
32%synergy
Boseiju, Who Shelters All
30%inclusion25 decks84 decks
29%synergy
Spinerock Knoll
21%inclusion18 decks84 decks
17%synergy
Eiganjo, Seat of the Empire
20%inclusion17 decks84 decks
7%synergy
Temple of the False God
20%inclusion17 decks84 decks
11%synergy
Arcane Lighthouse
19%inclusion16 decks84 decks
18%synergy
Reliquary Tower
19%inclusion16 decks84 decks
0%synergy
Command Beacon
14%inclusion12 decks84 decks
9%synergy
Buried Ruin
13%inclusion11 decks84 decks
-1%synergy
Axgard Armory
13%inclusion11 decks84 decks
4%synergy
Lindblum, Industrial Regency
9.1%inclusion2 decks22 decks
7%synergy
Cori Mountain Monastery
8.7%inclusion2 decks23 decks
6%synergy
Scavenger Grounds
8.3%inclusion7 decks84 decks
3%synergy
Detection Tower
8.3%inclusion7 decks84 decks
8%synergy
Urza's Saga
7.1%inclusion6 decks84 decks
-3%synergy
Sokenzan, Crucible of Defiance
7.1%inclusion6 decks84 decks
-2%synergy
Valakut, the Molten Pinnacle
6.0%inclusion5 decks84 decks
6%synergy
Forgotten Cave
6.0%inclusion5 decks84 decks
1%synergy
Secluded Steppe
6.0%inclusion5 decks84 decks
1%synergy
Multiversal Passage
5.0%inclusion1 decks20 decks
4%synergy
Mana Artifacts
Sol Ring
92%inclusion77 decks84 decks
7%synergy
Arcane Signet
83%inclusion70 decks84 decks
4%synergy
Talisman of Conviction
65%inclusion55 decks84 decks
13%synergy
Pyromancer's Goggles
61%inclusion51 decks84 decks
59%synergy
Boros Signet
54%inclusion45 decks84 decks
2%synergy
Mind Stone
24%inclusion20 decks84 decks
-1%synergy
Fellwar Stone
20%inclusion17 decks84 decks
-4%synergy
Mana Crypt
13%inclusion11 decks84 decks
12%synergy
Thran Dynamo
12%inclusion10 decks84 decks
7%synergy
Fire Diamond
11%inclusion9 decks84 decks
5%synergy
Thought Vessel
10%inclusion8 decks84 decks
-5%synergy
Commander's Sphere
8.3%inclusion7 decks84 decks
-7%synergy
Mana Vault
7.1%inclusion6 decks84 decks
3%synergy
Marble Diamond
7.1%inclusion6 decks84 decks
1%synergy
Mox Diamond
7.1%inclusion6 decks84 decks
5%synergy
Chrome Mox
6.0%inclusion5 decks84 decks
2%synergy
Worn Powerstone
6.0%inclusion5 decks84 decks
4%synergy
Lands
Command Tower
96%inclusion81 decks84 decks
11%synergy
Sacred Foundry
95%inclusion80 decks84 decks
49%synergy
Mountain
95%inclusion80 decks84 decks
-2%synergy
Plains
93%inclusion78 decks84 decks
-5%synergy
Clifftop Retreat
82%inclusion69 decks84 decks
17%synergy
Spectator Seating
82%inclusion69 decks84 decks
43%synergy
Plateau
81%inclusion68 decks84 decks
69%synergy
Arid Mesa
80%inclusion67 decks84 decks
51%synergy
Sundown Pass
73%inclusion61 decks84 decks
37%synergy
Rugged Prairie
63%inclusion53 decks84 decks
21%synergy
Battlefield Forge
63%inclusion53 decks84 decks
7%synergy
Sunbillow Verge
62%inclusion16 decks26 decks
38%synergy
Temple of Triumph
54%inclusion45 decks84 decks
16%synergy
Needleverge Pathway
52%inclusion44 decks84 decks
26%synergy
Boros Garrison
44%inclusion37 decks84 decks
6%synergy
Sunbaked Canyon
43%inclusion36 decks84 decks
26%synergy
Elegant Parlor
42%inclusion35 decks84 decks
22%synergy
Furycalm Snarl
37%inclusion31 decks84 decks
-7%synergy
Radiant Summit
35%inclusion7 decks20 decks
18%synergy
Pinnacle Monk
29%inclusion22 decks75 decks
24%synergy
Myriad Landscape
27%inclusion23 decks84 decks
7%synergy
Prismatic Vista
26%inclusion22 decks84 decks
20%synergy
Sunscorched Divide
25%inclusion21 decks84 decks
5%synergy
Valakut Awakening
23%inclusion19 decks84 decks
16%synergy
Fabled Passage
21%inclusion18 decks84 decks
13%synergy
Shatterskull Smashing
19%inclusion16 decks84 decks
16%synergy
Exotic Orchard
17%inclusion14 decks84 decks
-12%synergy
Evolving Wilds
17%inclusion14 decks84 decks
-3%synergy
Bloodstained Mire
17%inclusion14 decks84 decks
10%synergy
Inspiring Vantage
15%inclusion13 decks84 decks
-1%synergy
Scalding Tarn
14%inclusion12 decks84 decks
9%synergy
Wooded Foothills
13%inclusion11 decks84 decks
8%synergy
Flooded Strand
12%inclusion10 decks84 decks
6%synergy
Snow-Covered Plains
11%inclusion9 decks84 decks
8%synergy
Mana Confluence
11%inclusion9 decks84 decks
7%synergy
Marsh Flats
11%inclusion9 decks84 decks
4%synergy
Witch Enchanter
10%inclusion8 decks77 decks
-2%synergy
Glittering Massif
10%inclusion2 decks20 decks
4%synergy
Terramorphic Expanse
10%inclusion8 decks84 decks
-4%synergy
Windswept Heath
10%inclusion8 decks84 decks
3%synergy
City of Brass
10%inclusion8 decks84 decks
5%synergy
Sacred Peaks
10%inclusion8 decks84 decks
-2%synergy
Ash Barrens
8.3%inclusion7 decks84 decks
4%synergy
Reflecting Pool
8.3%inclusion7 decks84 decks
5%synergy
Wind-Scarred Crag
8.3%inclusion7 decks84 decks
-9%synergy
Snow-Covered Mountain
8.3%inclusion7 decks84 decks
6%synergy
Forbidden Orchard
8.3%inclusion7 decks84 decks
7%synergy
Legion Leadership
6.5%inclusion5 decks77 decks
-11%synergy
Sundering Eruption
6.5%inclusion5 decks77 decks
1%synergy
Alpine Meadow
6.0%inclusion5 decks84 decks
0%synergy
About UsContactPrivacy PolicyTerms of Service
Space Cow MediaArchidektCardsphereCommander SpellbookFABRECSpellvoid
Space Cow MediaArchidektCommander's Herald
Commander SpellbookFABRECSpellvoid
EDHREC is unofficial Fan Content permitted under the Fan Content Policy. Not approved/endorsed by Wizards. Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC.
next@15 test