Whenever Kotis deals combat damage to a player, exile the top X cards of their library, where X is the amount of damage dealt. You may cast any number of spells with mana value X or less from among them without paying their mana costs.
Suit up Kotis to deal big chunks of combat damage, then exile that many cards off the victim's library and free-cast any of them with mana value equal to or less than the damage dealt. You're a hybrid Voltron-theft deck: connect early, snowball into casting your opponents' bombs and your own mill payoffs, and grind value every combat thanks to Kotis being indestructible.
Indestructible commander dodges most removal and chump-proofs combat math
Free-casts opponents' bombs, turning every connection into raw card and tempo advantage
Sultai colors give the best ramp, card draw, and recursion in the format
Scales hard with power pumps and double strike for explosive value
Hard to keep down—recasting is cheap and the damage trigger snowballs
Relies on connecting in combat; flyers, fogs, and pillow-fort effects shut it off
Theft is variable—you can whiff into lands or low-impact cards
No evasion baked in, so unblockable/trample enablers are mandatory
Bounce, exile, and tuck removal still answer the commander despite indestructibility
Three-color manabase and a build-around plan make it stumble on bad draws
Protection, evasion, and untapped lands to keep casting the spells you steal.
Lean into evasion and power-doubling—add multiple equipment like the Swords, Fireshrieker, and trample/unblockable enablers so every swing matters. Tighten the manabase with fast mana (Sol Ring, signets, dual lands) and add protection like Lightning Greaves and Heroic Intervention to ensure connections land. For higher power, pivot toward an infect kill or a compact combo (Thassa's Oracle, infinite combat steps) backstopped by Kotis's indestructibility and Sultai's deep card advantage.
Commander damage, often accelerated by infect, double strike, or trample
Stealing and resolving opponents' game-winning bombs against them
Decking opponents out via repeated large library exiles
Assembling a Sultai combo (e.g., infinite combat or value loops) protected by Kotis
Pumping Kotis's power both kills players and increases the value of every damage trigger.
Free-casting opponents' high-MV spells from their own libraries is the core engine.
Exiling chunks of libraries doubles as an attrition and self-mill payoff plan.
Sultai colors and indestructibility support resilient infinite or game-ending shells.