Daru Spiritualist, Worthy Cause, and Shuko

Prerequisites

• Daru Spiritualist on the battlefield
• Worthy Cause in hand
• Shuko on the battlefield
• available

Steps

1. Activate Shuko's equip ability by paying , targeting Daru Spiritualist
2. Daru Spiritualist triggers, causing itself to get +0/+2 until end of turn
3. Resolve the Shuko ability, attaching it to Daru Spiritualist
4. Repeat an arbitrarily large number of times
5. Cast Worthy Cause by paying and sacrificing Daru Spiritualist, causing you to gain life equal to Daru Spiritualist's toughness

Results

• Infinite lifegain