Crystalline Crawler, Dancing from Dark to Dawn, and Sparkcaster

Prerequisites

• Crystalline Crawler on the battlefield
• Dancing from Dark to Dawn on the battlefield
• Sparkcaster in hand
• available

Steps

1. Cast Sparkcaster 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 Sparkcaster spell
4. When it enters, its first and second abilities trigger
5. Resolve the first trigger, returning Sparkcaster from the battlefield to your hand
6. Resolve the second trigger, dealing 1 damage to an opponent
7. Activate Crystalline Crawler four times by removing four +1/+1 counters from it, adding
8. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite damage
• Infinite storm count