Body Double and Bartolomé del Presidio on the battlefield (Body Double as a copy of Reveillark).
Steps
Activate Bartolomé del Presidio by sacrificing Body Double.
When Body Double leaves the battlefield, it triggers its Reveillark ability, returning itself from your graveyard to the battlefield as a copy of Reveillark.
Resolve the Bartolomé del Presidio ability.
Repeat.
Results
Infinite +1/+1 counters on Bartolomé del Presidio.