Ygra, Eater of All + Cauldron Familiar + Lithatog + Insidious Roots
Ygra, Eater of All
Cauldron Familiar
Lithatog
Insidious Roots
Infinite creature LTBInfinite creature ETBInfinite creature sacrifice triggersInfinite lifegain triggersInfinite lifegainInfinite lifelossInfinitely large creature until end of turnInfinite +1/+1 counters on a creatureInfinite +1/+1 counters on certain creatures
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 Insidious Roots trigger.
Resolve the Insidious Roots trigger, creating a 0/1 Plant creature token and putting a +1/+1 counter on each Plant you control.
Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
Activate Lithatog by sacrificing Cauldron Familiar.
When Cauldron Familiar dies, Ygra triggers, putting two +1/+1 counters on it.