Shalai and Hallar + Devoted Druid + Arcus Acolyte + Ozolith, the Shattered Spire

Shalai and Hallar
Devoted Druid
Arcus Acolyte
Ozolith, the Shattered Spire

Requires
Shalai and Hallar must be on the battlefield. Devoted Druid must be on the battlefield. Arcus Acolyte must be on the battlefield. Ozolith, the Shattered Spire must be on the battlefield. Devoted Druid does not have summoning sickness and does not have a -1/-1 counter on it.
Steps
  1. Activate Devoted Druid's first ability by tapping it, adding .
  2. Activate Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
  3. If Devoted Druid has a +1/+1 counter on it, repeat from step 1 until Devoted Druid has no +1/+1 counters.
  4. Activate Devoted Druid's outlast ability by paying and tapping it, putting two +1/+1 counters on Devoted Druid.
  5. Shalai and Hallar triggers, dealing 2 damage to an opponent.
  6. Repeat from step 2.
Results
Infinite damage.

Shalai and Hallar
0.35% of 8949 decks 31 decks
Marath, Will of the Wild
0.04% of 2413 decks 1 decks
High Synergy Cards
Kami of Whispered Hopes
94% of 32 decks +84% synergy
The Red Terror
84% of 32 decks +81% synergy
All Will Be One
88% of 32 decks +80% synergy
Heliod, Sun-Crowned
81% of 32 decks +79% synergy
Hardened Scales
88% of 32 decks +79% synergy
Conclave Mentor
72% of 32 decks +65% synergy
Innkeeper's Talent
67% of 6 decks +58% synergy
War Elemental
59% of 32 decks +58% synergy
Walking Ballista
59% of 32 decks +57% synergy
Branching Evolution
56% of 32 decks +51% synergy
Top Cards
Kutzil, Malamet Exemplar
74% of 19 decks +51% synergy
Swords to Plowshares
66% of 32 decks +6% synergy
Worldly Tutor
59% of 32 decks +44% synergy
Rhythm of the Wild
59% of 32 decks +26% synergy
Cathars' Crusade
56% of 32 decks +48% synergy
Incubation Druid
56% of 32 decks +46% synergy
Eladamri's Call
56% of 32 decks +44% synergy
Basking Broodscale
55% of 11 decks +49% synergy
Mikaeus, the Lunarch
50% of 32 decks +46% synergy
Gyre Sage
50% of 32 decks +41% synergy
Creatures
Champion of Lambholt
50% of 32 decks +37% synergy
Scurry Oak
47% of 32 decks +44% synergy
Halana and Alena, Partners
47% of 32 decks +42% synergy
Delighted Halfling
47% of 30 decks +36% synergy
Evolution Witness
45% of 11 decks +38% synergy
Trelasarra, Moon Dancer
44% of 32 decks +43% synergy
Forgotten Ancient
44% of 32 decks +38% synergy
Tender Wildguide
43% of 7 decks +37% synergy
Ajani's Pridemate
41% of 32 decks +39% synergy
Birds of Paradise
41% of 32 decks +18% synergy
Ivy Lane Denizen
38% of 32 decks +36% synergy
Abzan Battle Priest
38% of 32 decks +35% synergy
Managorger Hydra
38% of 32 decks +33% synergy
Rishkar, Peema Renegade
38% of 32 decks +30% synergy
Bristly Bill, Spine Sower
36% of 11 decks +32% synergy
Celestial Unicorn
34% of 32 decks +34% synergy
Herd Baloth
34% of 32 decks +32% synergy
Rosie Cotton of South Lane
33% of 30 decks +26% synergy
Vigor
31% of 32 decks +29% synergy
Shalai, Voice of Plenty
31% of 32 decks +27% synergy
Avacyn's Pilgrim
31% of 32 decks +17% synergy
Arwen, Weaver of Hope
30% of 27 decks +24% synergy
Anim Pakal, Thousandth Moon
29% of 14 decks +20% synergy
Voice of the Blessed
28% of 32 decks +28% synergy
Good-Fortune Unicorn
28% of 32 decks +24% synergy
Esper Sentinel
28% of 32 decks +16% synergy
Sovereign Okinec Ahau
26% of 19 decks +20% synergy
Bright-Palm, Soul Awakener
26% of 31 decks +22% synergy
Archangel of Thune
25% of 32 decks +24% synergy
Benevolent Hydra
25% of 32 decks +24% synergy
Aragorn, Hornburg Hero
25% of 20 decks +23% synergy
Armorcraft Judge
25% of 32 decks +20% synergy
Kodama of the West Tree
25% of 32 decks +20% synergy
Kalonian Hydra
22% of 32 decks +17% synergy
Grand Abolisher
22% of 32 decks +16% synergy
Eternal Witness
22% of 32 decks +12% synergy
Elvish Mystic
22% of 32 decks +7% synergy
Llanowar Elves
22% of 32 decks +5% synergy
Spike Feeder
19% of 32 decks +18% synergy
Soul Warden
19% of 32 decks +17% synergy
Biophagus
19% of 32 decks +17% synergy
Evolution Sage
19% of 32 decks +15% synergy
Dusk Legion Duelist
19% of 32 decks +13% synergy
Phyrexian Devourer
16% of 32 decks +16% synergy
Twinblade Paladin
16% of 32 decks +16% synergy
Soul's Attendant
16% of 32 decks +15% synergy
Vorinclex, Monstrous Raider
16% of 32 decks +14% synergy
Emiel the Blessed
16% of 32 decks +13% synergy
Goblin Anarchomancer
16% of 32 decks +10% synergy
Bloom Tender
16% of 32 decks +6% synergy
Instants
Path to Exile
50% of 32 decks -2% synergy
Heroic Intervention
47% of 32 decks +8% synergy
Inspiring Call
44% of 32 decks +33% synergy
Enlightened Tutor
41% of 32 decks +27% synergy
Snakeskin Veil
28% of 32 decks +26% synergy
Chord of Calling
28% of 32 decks +22% synergy
Beast Within
28% of 32 decks -10% synergy
Teferi's Protection
25% of 32 decks +6% synergy
Stroke of Midnight
22% of 27 decks +12% synergy
Generous Gift
22% of 32 decks -9% synergy
Silence
19% of 32 decks +15% synergy
Deflecting Swat
16% of 32 decks +4% synergy
Silkguard
12% of 32 decks +11% synergy
Veil of Summer
12% of 32 decks +8% synergy
Nature's Claim
12% of 32 decks +6% synergy
Boros Charm
12% of 32 decks -16% synergy
Blessed Defiance
9% of 32 decks +9% synergy
Take Up the Shield
9% of 32 decks +9% synergy
Signal the Clans
9% of 32 decks +9% synergy
Reprieve
9% of 32 decks +7% synergy
Dromoka's Command
9% of 32 decks +6% synergy
Pyroblast
9% of 32 decks +6% synergy
Tamiyo's Safekeeping
9% of 32 decks +6% synergy
Abrade
9% of 32 decks +6% synergy
Flawless Maneuver
9% of 32 decks -4% synergy
Chaos Warp
9% of 32 decks -8% synergy
Sorceries
Three Visits
47% of 32 decks +18% synergy
Nature's Lore
47% of 32 decks +9% synergy
Farseek
44% of 32 decks -6% synergy
Cultivate
41% of 32 decks -13% synergy
Damning Verdict
31% of 32 decks +26% synergy
Kodama's Reach
25% of 32 decks -10% synergy
Rampant Growth
22% of 32 decks -18% synergy
Time of Need
12% of 32 decks +12% synergy
Twinflame
12% of 32 decks +11% synergy
Sylvan Scrying
12% of 32 decks +11% synergy
Gamble
12% of 32 decks +9% synergy
Eldritch Evolution
12% of 32 decks +8% synergy
Finale of Devastation
12% of 32 decks +3% synergy
Angelfire Ignition
9% of 32 decks +9% synergy
Sylvan Tutor
9% of 32 decks +8% synergy
Idyllic Tutor
9% of 32 decks +5% synergy
Vandalblast
9% of 32 decks +4% synergy
Farewell
9% of 32 decks -1% synergy
Rishkar's Expertise
9% of 32 decks -6% synergy
Utility Artifacts
The Ozolith
41% of 32 decks +36% synergy
The Great Henge
38% of 32 decks +23% synergy
Shadowspear
25% of 32 decks +23% synergy
Basilisk Collar
25% of 32 decks +20% synergy
Swiftfoot Boots
25% of 32 decks -0% synergy
Staff of Domination
19% of 32 decks +18% synergy
Lightning Greaves
19% of 32 decks -5% synergy
Agatha's Soul Cauldron
15% of 27 decks +14% synergy
Talon of Pain
12% of 32 decks +12% synergy
Animation Module
12% of 32 decks +12% synergy
The One Ring
12% of 32 decks +9% synergy
Lifecrafter's Bestiary
9% of 32 decks +4% synergy
Enchantments
Court of Garenbrig
42% of 24 decks +38% synergy
Uncivil Unrest
35% of 31 decks +29% synergy
Cleric Class
31% of 32 decks +31% synergy
Mayael's Aria
31% of 32 decks +26% synergy
Tribute to the World Tree
28% of 32 decks +19% synergy
Annie Joins Up
27% of 11 decks +2% synergy
Sylvan Library
25% of 32 decks +13% synergy
Felidar Retreat
25% of 32 decks +5% synergy
Swift Reconfiguration
22% of 32 decks +21% synergy
Lifelink
19% of 32 decks +19% synergy
Keen Sense
19% of 32 decks +17% synergy
Virtue of Loyalty
17% of 24 decks +14% synergy
Light of Promise
16% of 32 decks +15% synergy
Rite of Passage
16% of 32 decks +14% synergy
Invigorating Hot Spring
16% of 32 decks +13% synergy
Snake Umbra
16% of 32 decks +13% synergy
Ajani's Welcome
12% of 32 decks +11% synergy
Resourceful Defense
12% of 32 decks +11% synergy
Impact Tremors
12% of 32 decks -2% synergy
Spirit Link
9% of 32 decks +9% synergy
Felidar Umbra
9% of 32 decks +9% synergy
Together Forever
9% of 32 decks +7% synergy
Sterling Grove
9% of 32 decks +6% synergy
Primal Vigor
9% of 32 decks +5% synergy
Smothering Tithe
9% of 32 decks -6% synergy
Battles
Invasion of Ikoria
23% of 31 decks +14% synergy
Planeswalkers
Nissa, Voice of Zendikar
9% of 32 decks +9% synergy
Minsc & Boo, Timeless Heroes
9% of 32 decks +7% synergy
Utility Lands
Gavony Township
56% of 32 decks +44% synergy
Karn's Bastion
47% of 32 decks +44% synergy
Yavimaya, Cradle of Growth
28% of 32 decks +10% synergy
Mosswort Bridge
22% of 32 decks +3% synergy
Rogue's Passage
22% of 32 decks -4% synergy
Boseiju, Who Endures
19% of 32 decks +2% synergy
Oran-Rief, the Vastwood
16% of 32 decks +13% synergy
Llanowar Reborn
16% of 32 decks +13% synergy
Reliquary Tower
16% of 32 decks -1% synergy
Witch's Clinic
12% of 32 decks +12% synergy
Nesting Grounds
12% of 32 decks +12% synergy
Forge of Heroes
9% of 32 decks +9% synergy
Urza's Saga
9% of 32 decks +6% synergy
Mana Artifacts
Sol Ring
78% of 32 decks -6% synergy
Arcane Signet
75% of 32 decks +3% synergy
Fellwar Stone
28% of 32 decks +17% synergy
Commander's Sphere
16% of 32 decks +4% synergy
Mana Crypt
12% of 32 decks +6% synergy
Talisman of Unity
12% of 32 decks +4% synergy
Chromatic Lantern
12% of 32 decks +1% synergy
Talisman of Impulse
9% of 32 decks +2% synergy
Talisman of Conviction
9% of 32 decks +2% synergy
Boros Signet
9% of 32 decks -2% synergy
Selesnya Signet
9% of 32 decks -2% synergy
Gruul Signet
9% of 32 decks -3% synergy
Lands
Command Tower
91% of 32 decks -0% synergy
Jetmir's Garden
72% of 32 decks +26% synergy
Temple Garden
66% of 32 decks +22% synergy
Stomping Ground
66% of 32 decks +22% synergy
Cinder Glade
56% of 32 decks +6% synergy
Arid Mesa
50% of 32 decks +22% synergy
Windswept Heath
50% of 32 decks +22% synergy
Sacred Foundry
50% of 32 decks +11% synergy
Exotic Orchard
50% of 32 decks -2% synergy
Spectator Seating
47% of 32 decks +18% synergy
Wooded Foothills
44% of 32 decks +17% synergy
Canopy Vista
44% of 32 decks -5% synergy
Jungle Shrine
44% of 32 decks -13% synergy
Bountiful Promenade
41% of 32 decks +9% synergy
Spire Garden
38% of 32 decks +7% synergy
Rootbound Crag
38% of 32 decks +5% synergy
Rockfall Vale
34% of 32 decks +7% synergy
Sunpetal Grove
34% of 32 decks +2% synergy
Clifftop Retreat
34% of 32 decks +0% synergy
Path of Ancestry
31% of 32 decks -2% synergy
Commercial District
31% of 13 decks +20% synergy
Lush Portico
31% of 13 decks +19% synergy
Overgrown Farmland
28% of 32 decks +6% synergy
Elegant Parlor
23% of 13 decks +14% synergy
Mossfire Valley
22% of 32 decks +10% synergy
Sungrass Prairie
22% of 32 decks +8% synergy
Krosan Verge
22% of 32 decks +7% synergy
Battlefield Forge
22% of 32 decks +4% synergy
Bretagard Stronghold
19% of 32 decks +17% synergy
Plateau
19% of 32 decks +8% synergy
Taiga
19% of 32 decks +8% synergy
Savannah
19% of 32 decks +8% synergy
Sundown Pass
19% of 32 decks +3% synergy
Brushland
19% of 32 decks +3% synergy
Marsh Flats
16% of 32 decks +9% synergy
Temple of Abandon
16% of 32 decks +2% synergy
Karplusan Forest
16% of 32 decks -1% synergy
Game Trail
16% of 32 decks -3% synergy
Fortified Village
16% of 32 decks -3% synergy
Scalding Tarn
12% of 32 decks +7% synergy
Bloodstained Mire
12% of 32 decks +7% synergy
City of Brass
12% of 32 decks +4% synergy
Cragcrown Pathway
12% of 32 decks +4% synergy
Evolving Wilds
12% of 32 decks -18% synergy
Opal Palace
9% of 32 decks +7% synergy
Razorverge Thicket
9% of 32 decks +5% synergy
Copperline Gorge
9% of 32 decks +5% synergy
Horizon Canopy
9% of 32 decks +5% synergy
Reflecting Pool
9% of 32 decks +4% synergy
Rugged Prairie
9% of 32 decks +3% synergy