Kenessos, Priest of Thassa (Commander) - Optimized

Kenessos, Priest of Thassa
Rank #499
55decks
As CommanderAs CardAverage DeckDecks
Bracket
All12345
Budget
Any$$$$
Ezra Sassaman
Mar 12, 2026
Ezra Sassaman
Fun Alternatives for the Top Ten Saltiest Commanders
Is your playgroup tired of your Tergrid deck? (Can't blame them.) Then check out this list of replacements for the saltiest commanders.
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
Elrond, Moon-Reader
11%inclusion1 decks9 decks
9%synergy
High Synergy Cards
Serpent of Yawning Depths
87%inclusion48 decks55 decks
81%synergy
Spawning Kraken
87%inclusion48 decks55 decks
81%synergy
Hullbreaker Horror
96%inclusion53 decks55 decks
79%synergy
Training Grounds
80%inclusion44 decks55 decks
76%synergy
Scourge of Fleets
82%inclusion45 decks55 decks
75%synergy
Aesi, Tyrant of Gyre Strait
89%inclusion49 decks55 decks
71%synergy
Starwinder
76%inclusion35 decks46 decks
70%synergy
Whelming Wave
80%inclusion44 decks55 decks
70%synergy
Koma, Cosmos Serpent
84%inclusion46 decks55 decks
69%synergy
Sensei's Divining Top
71%inclusion39 decks55 decks
67%synergy
Top Cards
Koma, World-Eater
78%inclusion43 decks55 decks
66%synergy
Arixmethes, Slumbering Isle
76%inclusion42 decks55 decks
63%synergy
Brainstorm
75%inclusion41 decks55 decks
60%synergy
Preordain
71%inclusion39 decks55 decks
63%synergy
Scroll Rack
69%inclusion38 decks55 decks
67%synergy
Summon: Leviathan
67%inclusion33 decks49 decks
61%synergy
Thassa, God of the Sea
65%inclusion36 decks55 decks
60%synergy
Biomancer's Familiar
64%inclusion35 decks55 decks
60%synergy
Stormtide Leviathan
64%inclusion35 decks55 decks
58%synergy
Sylvan Library
56%inclusion31 decks55 decks
48%synergy
Game Changers
Worldly Tutor
76%inclusion42 decks55 decks
63%synergy
Seedborn Muse
55%inclusion30 decks55 decks
39%synergy
Cyclonic Rift
55%inclusion30 decks55 decks
32%synergy
Fierce Guardianship
51%inclusion28 decks55 decks
35%synergy
Rhystic Study
40%inclusion22 decks55 decks
20%synergy
Mystical Tutor
35%inclusion19 decks55 decks
26%synergy
Ancient Tomb
31%inclusion17 decks55 decks
22%synergy
Force of Will
27%inclusion15 decks55 decks
18%synergy
Thassa's Oracle
16%inclusion9 decks55 decks
12%synergy
Crop Rotation
16%inclusion9 decks55 decks
5%synergy
Creatures
Stormsurge Kraken
55%inclusion30 decks55 decks
51%synergy
Tromokratis
55%inclusion30 decks55 decks
50%synergy
Inkwell Leviathan
55%inclusion30 decks55 decks
51%synergy
Glacier Godmaw
50%inclusion23 decks46 decks
46%synergy
Omen Hawker
45%inclusion25 decks55 decks
44%synergy
Xolatoyac, the Smiling Flood
42%inclusion23 decks55 decks
35%synergy
Slinn Voda, the Rising Deep
38%inclusion21 decks55 decks
32%synergy
The Unagi of Kyoshi Island
38%inclusion14 decks37 decks
33%synergy
Grappling Kraken
31%inclusion17 decks55 decks
27%synergy
Simic Sky Swallower
31%inclusion17 decks55 decks
27%synergy
Kederekt Leviathan
31%inclusion17 decks55 decks
30%synergy
Brinelin, the Moon Kraken
29%inclusion16 decks55 decks
25%synergy
The Reality Chip
29%inclusion16 decks55 decks
27%synergy
Sigiled Starfish
29%inclusion16 decks55 decks
27%synergy
Sin, Unending Cataclysm
29%inclusion14 decks49 decks
25%synergy
Monstrosity of the Lake
27%inclusion15 decks55 decks
25%synergy
Lorthos, the Tidemaker
27%inclusion15 decks55 decks
24%synergy
Icebreaker Kraken
25%inclusion14 decks55 decks
24%synergy
Thrasios, Triton Hero
25%inclusion14 decks55 decks
18%synergy
Biblioplex Kraken
25%inclusion14 decks55 decks
24%synergy
Trench Behemoth
25%inclusion14 decks55 decks
23%synergy
Famished Worldsire
24%inclusion11 decks46 decks
22%synergy
Octavia, Living Thesis
24%inclusion13 decks55 decks
23%synergy
Vesuvan Drifter
24%inclusion13 decks55 decks
23%synergy
Kiora, Sovereign of the Deep
24%inclusion13 decks55 decks
22%synergy
Archetype of Imagination
24%inclusion13 decks55 decks
19%synergy
Birds of Paradise
24%inclusion13 decks55 decks
-4%synergy
Omni-Changeling
21%inclusion6 decks29 decks
19%synergy
Nadir Kraken
20%inclusion11 decks55 decks
17%synergy
Charix, the Raging Isle
20%inclusion11 decks55 decks
17%synergy
Reservoir Kraken
16%inclusion9 decks55 decks
15%synergy
Deep-Sea Kraken
16%inclusion9 decks55 decks
14%synergy
Oracle of Mul Daya
15%inclusion8 decks55 decks
6%synergy
Moritte of the Frost
15%inclusion8 decks55 decks
13%synergy
Kiora's Follower
13%inclusion7 decks55 decks
-0%synergy
Eternal Witness
13%inclusion7 decks55 decks
-5%synergy
Breaching Leviathan
13%inclusion7 decks55 decks
11%synergy
Kinnan, Bonder Prodigy
13%inclusion7 decks55 decks
9%synergy
Galadriel of Lothlórien
13%inclusion7 decks55 decks
11%synergy
The Watcher in the Water
13%inclusion7 decks55 decks
12%synergy
Matoya, Archon Elder
12%inclusion6 decks49 decks
11%synergy
Bloom Tender
11%inclusion6 decks55 decks
6%synergy
Elvish Mariner
11%inclusion6 decks55 decks
9%synergy
Octoprophet
11%inclusion6 decks55 decks
10%synergy
Sea-Dasher Octopus
9.1%inclusion5 decks55 decks
7%synergy
Selvala, Heart of the Wilds
9.1%inclusion5 decks55 decks
5%synergy
Shield Broker
9.1%inclusion5 decks55 decks
9%synergy
Llanowar Elves
9.1%inclusion5 decks55 decks
-19%synergy
Drift of Phantasms
9.1%inclusion5 decks55 decks
6%synergy
Trench Gorger
9.1%inclusion5 decks55 decks
9%synergy
Instants
Opt
51%inclusion28 decks55 decks
44%synergy
Noxious Revival
45%inclusion25 decks55 decks
40%synergy
Joint Exploration
42%inclusion23 decks55 decks
37%synergy
Heroic Intervention
40%inclusion22 decks55 decks
9%synergy
An Offer You Can't Refuse
36%inclusion20 decks55 decks
12%synergy
Mana Drain
36%inclusion20 decks55 decks
21%synergy
Brainsurge
35%inclusion19 decks55 decks
31%synergy
Deliberate
33%inclusion18 decks55 decks
31%synergy
Beast Within
33%inclusion18 decks55 decks
-15%synergy
Pongify
31%inclusion17 decks55 decks
6%synergy
Counterspell
31%inclusion17 decks55 decks
-18%synergy
Growth Spiral
29%inclusion16 decks55 decks
-15%synergy
Swan Song
29%inclusion16 decks55 decks
10%synergy
Negate
24%inclusion13 decks55 decks
-1%synergy
Sink into Stupor
22%inclusion12 decks55 decks
9%synergy
Rapid Hybridization
20%inclusion11 decks55 decks
-7%synergy
Dissolve
20%inclusion11 decks55 decks
18%synergy
Arcane Denial
16%inclusion9 decks55 decks
-6%synergy
Long-Term Plans
16%inclusion9 decks55 decks
16%synergy
Smuggler's Surprise
15%inclusion8 decks55 decks
13%synergy
Condescend
15%inclusion8 decks55 decks
12%synergy
Force of Negation
15%inclusion8 decks55 decks
7%synergy
High Tide
15%inclusion8 decks55 decks
13%synergy
Return of the Wildspeaker
13%inclusion7 decks55 decks
3%synergy
Resculpt
13%inclusion7 decks55 decks
8%synergy
Planar Genesis
13%inclusion7 decks55 decks
2%synergy
Muddle the Mixture
11%inclusion6 decks55 decks
7%synergy
Decisive Denial
11%inclusion6 decks55 decks
5%synergy
Stubborn Denial
11%inclusion6 decks55 decks
8%synergy
Reality Shift
11%inclusion6 decks55 decks
-3%synergy
Cryptic Command
11%inclusion6 decks55 decks
9%synergy
Rewind
11%inclusion6 decks55 decks
8%synergy
Quandrix Charm
10%inclusion2 decks21 decks
2%synergy
Veil of Summer
9.1%inclusion5 decks55 decks
4%synergy
Gifts Ungiven
9.1%inclusion5 decks55 decks
8%synergy
Force of Vigor
9.1%inclusion5 decks55 decks
5%synergy
Tel-Jilad Justice
9.1%inclusion5 decks55 decks
9%synergy
Reclaim
9.1%inclusion5 decks55 decks
8%synergy
Snap
9.1%inclusion5 decks55 decks
5%synergy
Plasm Capture
7.3%inclusion4 decks55 decks
4%synergy
Chord of Calling
7.3%inclusion4 decks55 decks
-0%synergy
Nature's Claim
7.3%inclusion4 decks55 decks
-1%synergy
Flusterstorm
7.3%inclusion4 decks55 decks
1%synergy
Into the Flood Maw
7.3%inclusion4 decks55 decks
3%synergy
Engulf the Shore
7.3%inclusion4 decks55 decks
6%synergy
Borne Upon a Wind
7.3%inclusion4 decks55 decks
5%synergy
Pact of Negation
7.3%inclusion4 decks55 decks
1%synergy
Three Steps Ahead
5.5%inclusion3 decks55 decks
3%synergy
Archdruid's Charm
5.5%inclusion3 decks55 decks
0%synergy
Krosan Grip
5.5%inclusion3 decks55 decks
-1%synergy
Sorceries
Ponder
45%inclusion25 decks55 decks
38%synergy
Nature's Lore
40%inclusion22 decks55 decks
7%synergy
Cultivate
38%inclusion21 decks55 decks
-7%synergy
Sylvan Tutor
38%inclusion21 decks55 decks
37%synergy
Kodama's Reach
33%inclusion18 decks55 decks
-1%synergy
Three Visits
31%inclusion17 decks55 decks
5%synergy
Serum Visions
31%inclusion17 decks55 decks
28%synergy
Farseek
29%inclusion16 decks55 decks
2%synergy
Rampant Growth
29%inclusion16 decks55 decks
-10%synergy
Mystic Speculation
25%inclusion14 decks55 decks
24%synergy
Last March of the Ents
20%inclusion11 decks55 decks
17%synergy
Overwhelming Stampede
16%inclusion9 decks55 decks
4%synergy
Reason // Believe
15%inclusion8 decks55 decks
13%synergy
Traverse the Outlands
13%inclusion7 decks55 decks
9%synergy
Explore
13%inclusion7 decks55 decks
-7%synergy
Finale of Devastation
11%inclusion6 decks55 decks
-1%synergy
Sea Gate Restoration
9.1%inclusion5 decks55 decks
4%synergy
Elven Farsight
7.3%inclusion4 decks55 decks
4%synergy
Green Sun's Zenith
7.3%inclusion4 decks55 decks
-1%synergy
Eldritch Evolution
7.3%inclusion4 decks55 decks
5%synergy
Triumph of the Hordes
7.3%inclusion4 decks55 decks
4%synergy
Temporal Mastery
7.3%inclusion4 decks55 decks
6%synergy
Ugin's Insight
7.3%inclusion4 decks55 decks
7%synergy
Bala Ged Recovery
7.3%inclusion4 decks55 decks
-2%synergy
Sylvan Scrying
7.3%inclusion4 decks55 decks
2%synergy
Solve the Equation
7.3%inclusion4 decks55 decks
5%synergy
Nature's Rhythm
5.8%inclusion3 decks52 decks
-0%synergy
Skyshroud Claim
5.5%inclusion3 decks55 decks
-4%synergy
Foresee
5.5%inclusion3 decks55 decks
5%synergy
Rishkar's Expertise
5.5%inclusion3 decks55 decks
-4%synergy
Bridgeworks Battle
5.5%inclusion3 decks55 decks
1%synergy
Portent
5.5%inclusion3 decks55 decks
5%synergy
Flow State
5.0%inclusion1 decks20 decks
4%synergy
Utility Artifacts
The Great Henge
31%inclusion17 decks55 decks
21%synergy
Planetarium of Wan Shi Tong
27%inclusion10 decks37 decks
25%synergy
Lifecrafter's Bestiary
22%inclusion12 decks55 decks
18%synergy
Lightning Greaves
22%inclusion12 decks55 decks
2%synergy
Brainstone
18%inclusion10 decks55 decks
18%synergy
Crystal Ball
16%inclusion9 decks55 decks
15%synergy
The Temporal Anchor
15%inclusion8 decks55 decks
13%synergy
Swiftfoot Boots
13%inclusion7 decks55 decks
-12%synergy
The One Ring
11%inclusion6 decks55 decks
4%synergy
Heartstone
11%inclusion6 decks55 decks
10%synergy
Expedition Map
7.3%inclusion4 decks55 decks
3%synergy
Isochron Scepter
7.3%inclusion4 decks55 decks
5%synergy
Palantír of Orthanc
5.5%inclusion3 decks55 decks
5%synergy
The Enigma Jewel
5.5%inclusion3 decks55 decks
5%synergy
Candelabra of Tawnos
5.5%inclusion3 decks55 decks
5%synergy
Quicksilver Amulet
5.5%inclusion3 decks55 decks
5%synergy
Bident of Thassa
5.5%inclusion3 decks55 decks
-1%synergy
Sapphire Medallion
5.5%inclusion3 decks55 decks
2%synergy
Enchantments
Garruk's Uprising
51%inclusion28 decks55 decks
33%synergy
Quest for Ula's Temple
47%inclusion26 decks55 decks
45%synergy
Wilderness Reclamation
36%inclusion20 decks55 decks
27%synergy
In Search of Greatness
29%inclusion16 decks55 decks
27%synergy
Mystic Remora
27%inclusion15 decks55 decks
13%synergy
Retreat to Coralhelm
27%inclusion15 decks55 decks
19%synergy
Freed from the Real
25%inclusion14 decks55 decks
21%synergy
Pemmin's Aura
24%inclusion13 decks55 decks
21%synergy
Mirri's Guile
22%inclusion12 decks55 decks
21%synergy
Soothsaying
16%inclusion9 decks55 decks
16%synergy
Wild Growth
16%inclusion9 decks55 decks
8%synergy
Utopia Sprawl
15%inclusion8 decks55 decks
8%synergy
Exploration
9.1%inclusion5 decks55 decks
-3%synergy
Lost Isle Calling
9.1%inclusion5 decks55 decks
7%synergy
Lurking Predators
9.1%inclusion5 decks55 decks
8%synergy
Carpet of Flowers
9.1%inclusion5 decks55 decks
7%synergy
Netherese Puzzle-Ward
9.1%inclusion5 decks55 decks
8%synergy
Marit Lage's Slumber
9.1%inclusion5 decks55 decks
9%synergy
Defense of the Heart
9.1%inclusion5 decks55 decks
7%synergy
Aqueous Form
7.3%inclusion4 decks55 decks
3%synergy
Guardian Project
7.3%inclusion4 decks55 decks
1%synergy
Ominous Seas
7.3%inclusion4 decks55 decks
4%synergy
Cream of the Crop
7.3%inclusion4 decks55 decks
7%synergy
Propaganda
7.3%inclusion4 decks55 decks
0%synergy
Omniscience
5.5%inclusion3 decks55 decks
1%synergy
Eyes Everywhere
5.5%inclusion3 decks55 decks
5%synergy
Burgeoning
5.5%inclusion3 decks55 decks
-2%synergy
Leyline of Anticipation
5.5%inclusion3 decks55 decks
2%synergy
Planeswalkers
Kiora, Behemoth Beckoner
20%inclusion11 decks55 decks
14%synergy
Jace, the Mind Sculptor
15%inclusion8 decks55 decks
14%synergy
Nissa, Steward of Elements
11%inclusion6 decks55 decks
7%synergy
Kiora, Master of the Depths
7.3%inclusion4 decks55 decks
5%synergy
Kiora, the Crashing Wave
5.5%inclusion3 decks55 decks
3%synergy
Jace, Mirror Mage
5.5%inclusion3 decks55 decks
4%synergy
Utility Lands
Boseiju, Who Endures
51%inclusion28 decks55 decks
29%synergy
Reliquary Tower
51%inclusion28 decks55 decks
1%synergy
Rivendell
49%inclusion27 decks55 decks
44%synergy
Halimar Depths
44%inclusion24 decks55 decks
41%synergy
Otawara, Soaring City
44%inclusion24 decks55 decks
25%synergy
Mystic Sanctuary
42%inclusion23 decks55 decks
30%synergy
Castle Vantress
36%inclusion20 decks55 decks
30%synergy
Yavimaya, Cradle of Growth
31%inclusion17 decks55 decks
10%synergy
Alchemist's Refuge
25%inclusion14 decks55 decks
6%synergy
Zhalfirin Void
20%inclusion11 decks55 decks
18%synergy
Urza's Saga
18%inclusion10 decks55 decks
13%synergy
Mosswort Bridge
18%inclusion10 decks55 decks
1%synergy
Dark Depths
18%inclusion10 decks55 decks
12%synergy
Gaea's Cradle
16%inclusion9 decks55 decks
10%synergy
Rogue's Passage
16%inclusion9 decks55 decks
-7%synergy
Minamo, School at Water's Edge
15%inclusion8 decks55 decks
9%synergy
Castle Garenbrig
15%inclusion8 decks55 decks
10%synergy
Isolated Watchtower
13%inclusion7 decks55 decks
12%synergy
Shifting Woodland
13%inclusion7 decks55 decks
7%synergy
Nykthos, Shrine to Nyx
13%inclusion7 decks55 decks
10%synergy
Thespian's Stage
11%inclusion6 decks55 decks
5%synergy
Mistrise Village
10%inclusion5 decks52 decks
-1%synergy
Temple of the False God
9.1%inclusion5 decks55 decks
-7%synergy
Evendo, Waking Haven
6.5%inclusion3 decks46 decks
1%synergy
Treasure Vault
5.5%inclusion3 decks55 decks
1%synergy
Yavimaya Hollow
5.5%inclusion3 decks55 decks
5%synergy
Glacial Chasm
5.5%inclusion3 decks55 decks
4%synergy
Homeward Path
5.5%inclusion3 decks55 decks
4%synergy
Bonders' Enclave
5.5%inclusion3 decks55 decks
4%synergy
Mana Artifacts
Sol Ring
85%inclusion47 decks55 decks
5%synergy
Arcane Signet
69%inclusion38 decks55 decks
6%synergy
Mox Amber
24%inclusion13 decks55 decks
18%synergy
Simic Signet
22%inclusion12 decks55 decks
-7%synergy
Talisman of Curiosity
18%inclusion10 decks55 decks
-3%synergy
Mana Vault
16%inclusion9 decks55 decks
10%synergy
Thought Vessel
11%inclusion6 decks55 decks
-9%synergy
Chrome Mox
11%inclusion6 decks55 decks
5%synergy
Fellwar Stone
9.1%inclusion5 decks55 decks
-0%synergy
Lotus Petal
7.3%inclusion4 decks55 decks
1%synergy
Mox Diamond
7.3%inclusion4 decks55 decks
3%synergy
Everflowing Chalice
5.5%inclusion3 decks55 decks
2%synergy
Grim Monolith
5.5%inclusion3 decks55 decks
2%synergy
Basalt Monolith
5.5%inclusion3 decks55 decks
-1%synergy
Mox Opal
5.5%inclusion3 decks55 decks
1%synergy
Lands
Command Tower
82%inclusion45 decks55 decks
-3%synergy
Breeding Pool
76%inclusion42 decks55 decks
28%synergy
Island
71%inclusion39 decks55 decks
-25%synergy
Forest
71%inclusion39 decks55 decks
-25%synergy
Temple of Mystery
67%inclusion37 decks55 decks
31%synergy
Hinterland Harbor
65%inclusion36 decks55 decks
3%synergy
Misty Rainforest
62%inclusion34 decks55 decks
31%synergy
Rejuvenating Springs
60%inclusion33 decks55 decks
17%synergy
Hedge Maze
49%inclusion27 decks55 decks
30%synergy
Dreamroot Cascade
49%inclusion27 decks55 decks
3%synergy
Tropical Island
45%inclusion25 decks55 decks
31%synergy
Flooded Grove
45%inclusion25 decks55 decks
2%synergy
Yavimaya Coast
40%inclusion22 decks55 decks
-13%synergy
Simic Growth Chamber
35%inclusion19 decks55 decks
-10%synergy
Crystal Grotto
35%inclusion19 decks55 decks
32%synergy
Willowrush Verge
33%inclusion18 decks55 decks
14%synergy
Vineglimmer Snarl
31%inclusion17 decks55 decks
-9%synergy
Barkchannel Pathway
31%inclusion17 decks55 decks
11%synergy
Tangled Islet
29%inclusion16 decks55 decks
14%synergy
Snow-Covered Island
27%inclusion15 decks55 decks
22%synergy
Snow-Covered Forest
27%inclusion15 decks55 decks
22%synergy
Waterlogged Grove
27%inclusion15 decks55 decks
8%synergy
Verdant Catacombs
25%inclusion14 decks55 decks
16%synergy
Turbulent Wilderness
24%inclusion5 decks21 decks
7%synergy
Windswept Heath
24%inclusion13 decks55 decks
13%synergy
Wooded Foothills
24%inclusion13 decks55 decks
14%synergy
Flooded Strand
24%inclusion13 decks55 decks
13%synergy
Sink into Stupor
22%inclusion12 decks55 decks
9%synergy
Scalding Tarn
22%inclusion12 decks55 decks
13%synergy
Polluted Delta
22%inclusion12 decks55 decks
12%synergy
The Grey Havens
20%inclusion11 decks55 decks
18%synergy
Prismatic Vista
18%inclusion10 decks55 decks
11%synergy
Fabled Passage
16%inclusion9 decks55 decks
-2%synergy
Exotic Orchard
15%inclusion8 decks55 decks
-11%synergy
Rimewood Falls
15%inclusion8 decks55 decks
7%synergy
Overflowing Basin
13%inclusion7 decks55 decks
-9%synergy
Evolving Wilds
13%inclusion7 decks55 decks
-11%synergy
Terramorphic Expanse
11%inclusion6 decks55 decks
-9%synergy
Botanical Sanctum
11%inclusion6 decks55 decks
-2%synergy
Rain-Slicked Copse
10%inclusion3 decks29 decks
0%synergy
Myriad Landscape
9.1%inclusion5 decks55 decks
-10%synergy
Sea Gate Restoration
9.1%inclusion5 decks55 decks
4%synergy
Glasspool Mimic
9.1%inclusion5 decks55 decks
5%synergy
Quandrix Campus
7.3%inclusion4 decks55 decks
0%synergy
Urza's Cave
7.3%inclusion4 decks55 decks
3%synergy
Bala Ged Recovery
7.3%inclusion4 decks55 decks
-2%synergy
Sodden Verdure
6.9%inclusion2 decks29 decks
-17%synergy
Hydroelectric Specimen
5.5%inclusion3 decks55 decks
-1%synergy
Talon Gates of Madara
5.5%inclusion3 decks55 decks
-1%synergy
Bridgeworks Battle
5.5%inclusion3 decks55 decks
1%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