Infinite +1/+1 counters on a creature, Infinite storm count
Cast Dark Sphere by paying its mana cost.
When Dark Sphere enters, Builder's Talent's second ability triggers.
Holding priority, activate Dark Sphere by tapping and sacrificing it.
Resolve the Builder's Talent trigger, putting a +1/+1 counter on Evolution Witness.
Evolution Witness triggers, returning Dark Sphere from your graveyard to your hand.
Repeat.
Component Cards
How It Works
Cast Dark Sphere by paying its mana cost.
When Dark Sphere enters, Builder's Talent's second ability triggers.
Holding priority, activate Dark Sphere by tapping and sacrificing it.
Resolve the Builder's Talent trigger, putting a +1/+1 counter on Evolution Witness.
Evolution Witness triggers, returning Dark Sphere from your graveyard to your hand.
Repeat.