Lullmage Mentor + Primal Vigor + Elspeth, Storm Slayer + Exalted Sunborn

Lullmage Mentor

Primal Vigor

Elspeth, Storm Slayer

Exalted Sunborn

How it works

1. Whenever an opponent casts a spell, activate Lullmage Mentor by tapping seven untapped Merfolk, countering that spell.
2. Lullmage Mentor triggers, creating a total of eight 1/1 Merfolk creature tokens.
3. Repeat.

This elegant engine locks opponents out of the game entirely by weaponizing Lullmage Mentor's counter ability. Whenever an opponent casts a spell, you tap seven untapped Merfolk to counter it, which in turn triggers Lullmage Mentor to create a fresh Merfolk token. Thanks to the token-doubling effects of Primal Vigor, Elspeth, Storm Slayer, and Exalted Sunborn all operating simultaneously, a single token creation is multiplied exponentially—yielding eight brand-new Merfolk instead of just one. You instantly refresh your army and net more than enough bodies to continuously pay the seven-Merfolk cost, allowing you to counter every subsequent spell your opponents attempt to cast.