Ygra, Eater of All + Cauldron Familiar + Megatog + Garrison Excavator
Ygra, Eater of All
Cauldron Familiar
Megatog
Garrison Excavator
Infinite +1/+1 counters on a creatureInfinite creature ETBInfinite creature LTBInfinite lifegainInfinite lifegain triggersInfinite lifelossInfinite creature sacrifice triggersInfinitely large creature until end of turn
How it works
Activate Cauldron Familiar by sacrificing a Food.
Ygra triggers, putting two +1/+1 counters on it.
Resolve the Cauldron Familiar ability, returning it from your graveyard to the battlefield.
Cauldron Familiar and Garrison Excavator trigger.
Resolve the Garrison Excavator trigger, creating a creature token.
Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
Activate Megatog by sacrificing Cauldron Familiar.
When Cauldron Familiar dies, Ygra triggers, putting two +1/+1 counters on it.