Crackdown Construct + Eater of the Dead

Crackdown Construct
Eater of the Dead

Requires
Crackdown Construct must be on the battlefield. Eater of the Dead must be on the battlefield. There is at least one creature card in a graveyard.
Steps
  1. Activate Eater of the Dead by paying 0, targeting any creature card in a graveyard.
  2. Crackdown Construct triggers, giving itself +1/+1 until end of turn.
  3. Repeat.
Results
Infinitely large Crackdown Construct until end of turn.