Crystalline Crawler + Dancing from Dark to Dawn + Venser, Shaper Savant

Crystalline Crawler

Dancing from Dark to Dawn

Venser, Shaper Savant

How it works

1. Cast Venser by paying its mana cost.
2. Dancing from Dark to Dawn's first ability triggers, putting four +1/+1 counters on Crystalline Crawler.
3. Resolve the Venser spell. When it enters, it triggers, returning itself from the battlefield to your hand.
4. Activate Crystalline Crawler four times by removing four +1/+1 counters from it, adding 2.
5. Repeat.