Basking Broodscale + Painter's Servant + Ivy Lane Denizen
Basking Broodscale
Painter's Servant
Ivy Lane Denizen
Infinite +1/+1 counters on a creatureInfinite colorless manaInfinite creature tokensInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite creature sacrifice triggers
How it works
Put a +1/+1 counter on Basking Broodscale.
Basking Broodscale triggers, creating a 0/1 Eldrazi Spawn creature token.
When the Eldrazi Spawn enters the battlefield as a green creature due to Painter's Servant, Ivy Lane Denizen triggers, putting a +1/+1 counter on Basking Broodscale.