Myrkul, Lord of Bones + Ondu Spiritdancer + Underworld Coinsmith

Prerequisites

• You have a way to kill Ondu Spiritdancer.

Steps

1. 1Kill Ondu Spiritdancer.
2. 2Myrkul triggers, creating a token copy of Ondu Spiritdancer that is an enchantment.
3. 3When the token Ondu Spiridancer enters the battlefield, it and Underworld Coinsmith trigger.
4. 4Resolve the Underworld Coinsmith trigger, causing you to gain 1 life.
5. 5Resolve the Ondu Spiritdancer trigger, creating a token copy of itself.
6. 6Repeat from step 3.

Effects

• Infinite copies of a specific creature
• Infinite lifegain
• Infinite lifegain triggers