Yawgmoth, Thran Physician, Voidwing Hybrid, Tekuthal, Inquiry Dominus, and Crystalline Crawler

Prerequisites

• Yawgmoth, Thran Physician on the battlefield
• Voidwing Hybrid in hand
• Tekuthal, Inquiry Dominus on the battlefield
• Crystalline Crawler on the battlefield
• Crystalline Crawler has at least one +1/+1 counter on it
• available

Steps

1. Activate Yawgmoth's second ability by paying and discarding Voidwing Hybrid, causing you to put two +1/+1 counters on Crystalline Crawler
2. Voidwing Hybrid triggers, returning itself from your graveyard to your hand
3. Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding
4. Repeat

Results

• Infinite proliferate
• Infinite self-discard triggers