Lullmage Mentor + Mondrak, Glory Dominus + Elspeth, Storm Slayer + Exalted Sunborn

Lullmage Mentor

Mondrak, Glory Dominus

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 mesmerizing loop turns Lullmage Mentor into an absolute fortress against your opponents' spells. Whenever a spell needs countering, you tap seven untapped Merfolk to trigger Lullmage Mentor's activated ability, which in turn fires off its own triggered ability to create a 1/1 token. Because powerful token doublers like Mondrak, Glory Dominus, Elspeth, Storm Slayer, and Exalted Sunborn are all amplifying replacement effects on your battlefield at the same time, that single token creation explodes into eight brand-new Merfolk instead of just one. You are left with more than enough fresh bodies to immediately tap for the next counterspell, locking your opponents out of the game entirely while generating a near-infinite army.