Tekuthal, Inquiry Dominus

Gameplan

Tekuthal turns every proliferate trigger into two, snowballing counters across the board to win through oversized creatures, planeswalker ultimates, infinite combos, or poison. You spend the early game ramping and deploying proliferate engines, then chain triggers to overwhelm everyone with explosive counter growth.

Key Cards

• Atraxa, Praetors' Voice — Not in color, but as a reference point—instead lean on engines like Inexorable Tide that proliferate on every spell, doubled by Tekuthal.
• Inexorable Tide — Proliferates on every spell cast, becoming two proliferates each with Tekuthal for runaway value.
• Karn's Bastion — A land that proliferates, giving you a repeatable doubled trigger every turn.
• Throne of Geth — Sacrifices an artifact to proliferate twice, a cheap way to spike counters.
• Contagion Engine — Adds -1/-1 counters then proliferates twice, doubled to four, devastating boards and enabling combos.
• Triskelion — With Mikaeus or counter doubling, removing/proliferating damage counters sets up infinite damage loops.

Upgrade Path

Add more proliferate engines (Inexorable Tide, Evolution Sage, Flux Channeler) and free repeatable sources so Tekuthal's doubling triggers constantly. Tighten the mana with fast rocks (Sol Ring, Mana Crypt) and protection (Swiftfoot Boots, counterspells) to keep the commander alive. For a true combo finish, include compact lines like Triskelion plus counter manipulation or infect tutors to win out of nowhere.