Crackdown Construct + Hyalopterous Lemure

Crackdown Construct
Hyalopterous Lemure

Requires
Crackdown Construct must be on the battlefield. Hyalopterous Lemure must be on the battlefield.
Steps
  1. Activate Hyalopterous Lemure's ability.
  2. Crackdown Construct gets +1/+1 until end of turn.
  3. Repeat.
Results
Infinitely large Crackdown Construct.