Lullmage Mentor + Adrix and Nev, Twincasters + Ojer Taq, Deepest Foundation // Temple of Civilization + Mondrak, Glory Dominus

Lullmage Mentor

Adrix and Nev, Twincasters

Ojer Taq, Deepest Foundation // Temple of Civilization

Mondrak, Glory Dominus

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 twelve 1/1 Merfolk creature tokens.
3. Repeat.

This brilliant lock relies on Lullmage Mentor's counter ability, which is fueled by a massive army of Merfolk generated whenever it successfully counters a spell. The engine explodes in scale thanks to Adrix and Nev, Twincasters, Ojer Taq, Deepest Foundation, and Mondrak, Glory Dominus: their replacement effects stack together to multiply the single token trigger into twelve 1/1 Merfolk tokens at once. With seven tapped to pay the initial cost, you still net five fresh Merfolk per iteration, easily feeding the Mentor to counter every single spell your opponents try to cast.