
Partner with Pir, Imaginative Rascal (When this creature enters, target player may put Pir into their hand from their library, then shuffle.)
Whenever you draw a card, put a +1/+1 counter on Toothy.
When Toothy leaves the battlefield, draw a card for each +1/+1 counter on it.
Toothy is a mono-blue card-draw payoff that grows with every card you draw and refunds a massive hand when it dies. You build a draw engine, pile counters on Toothy, then either swing for lethal or sacrifice/bounce Toothy to refill and pressure the table. Pir, Imaginative Rascal as a partner adds counter doubling and Doubling Season synergy if you go Sultai, but mono-U Toothy is the core engine.
Add more cantrips and draw engines (Esper Sentinel-style stax aside, lean on Sylvan Library-equivalents, Brainstorm, Ponder, Preordain) to maximize counter accrual, then include cheap protection like Heroic Intervention's blue analog (Swiftfoot Boots, Lightning Greaves, Mother of Runes is white—use Spellskite/Veil of Summer if splashing). Splash into Pir's Sultai identity for Doubling Season, Hardened Scales, and counter-doubling to make Toothy lethal and draws explosive. Tighten the mana with fast rocks (Sol Ring, Mana Crystals) and add a clean combo like Toothy + sacrifice outlet + Laboratory Maniac/Thassa's Oracle to win off the death-draw.
The most-played cards for this commander, built from aggregated deck data (the Mythic Graph). Build public decks to seed it.
→ Infinite self-discard triggers, Infinite draw triggers, Infinite looting
→ Infinite card draw, Infinite draw triggers, Near-infinite storm count
→ Infinite card draw, Infinite draw triggers, Near-infinite storm count
→ Infinite card draw, Infinite draw triggers, Near-infinite storm count
→ Infinite card draw, Infinite draw triggers, Near-infinite storm count
Combos via Commander Spellbook.
Same color identity (U), by popularity.