Crystalline Crawler, Dancing from Dark to Dawn, and Hoverguard Sweepers

Prerequisites

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

Steps

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

Results

• Infinite ETB
• Infinite LTB
• Infinite storm count
• Return any number of creatures to their owners' hands