Infinite +1/+1 counters on a creature, Infinite death triggers, Infinite ETB, Infinite LTB, Infinite sacrifice triggers, Infinite storm count
Cast Rancor by paying , attaching it to any other creature you control.
When Rancor enters the battlefield, Eutropia triggers, putting a +1/+1 counter on Scurry Oak.
Scurry Oak triggers, creating a 1/1 Squirrel creature token.
Activate Phyrexian Altar by sacrificing the creature with Rancor attached, adding .
Rancor triggers, returning it from your graveyard to your hand.
Repeat.
Component Cards
How It Works
Cast Rancor by paying , attaching it to any other creature you control.
When Rancor enters the battlefield, Eutropia triggers, putting a +1/+1 counter on Scurry Oak.
Scurry Oak triggers, creating a 1/1 Squirrel creature token.
Activate Phyrexian Altar by sacrificing the creature with Rancor attached, adding .
Rancor triggers, returning it from your graveyard to your hand.
Repeat.