Scurry Oak + Answered Prayers + Yawgmoth, Thran PhysicianInitial Card StateScurry Oak on the battlefield. Answered Prayers on the battlefield. Notable PrerequisitesYou control at least two additional creatures.
Scurry Oak has no +1/+1 counters on it.
Your life total is at least 2.
StepsCast Yawgmoth by paying 

.
When Yawgmoth enters the battlefield, Answered Prayers and Scurry Oak's evolve ability trigger.
Holding priority, activate Yawgmoth by paying 1 life and sacrificing a creature, putting a -1/-1 counter on Scurry Oak and causing you to draw a card.
Resolve the Answered Prayers trigger, causing you to gain 1 life.
Resolve the Scurry Oak trigger, putting a +1/+1 counter on it, triggering Scurry Oak's second ability.
Holding priority, activate Yawgmoth by paying 1 life and sacrificing a creature, putting a -1/-1 counter on Scurry Oak and causing you to draw a card.
Resolve the Scurry Oak trigger, creating a 1/1 Squirrel creature token.
When the Squirrel enters the battlefield, Answered Prayers and Scurry Oak's evolve ability trigger.
Repeat from step 4.
ResultsInfinite card drawInfinite draw triggersNear-infinite death triggersNear-infinite ETBNear-infinite lifegain triggersNear-infinite LTBNear-infinite sacrifice triggers