Myrkul, Lord of Bones, Cinderhaze Wretch, and Jaheira, Friend of the Forest

Prerequisites

• Myrkul, Lord of Bones on the battlefield
• Cinderhaze Wretch on the battlefield
• Jaheira, Friend of the Forest on the battlefield

Steps

1. Activate Cinderhaze Wretch's second ability by putting a -1/-1 counter on it, untapping it
2. Repeat step 1 until Cinderhaze Wretch dies as a state-based action due to having zero or less toughness
3. Myrkul triggers, causing you to exile Cinderhaze Wretch and create a token copy of Cinderhaze Wretch that is an enchantment and loses all other card types
4. Activate the Cinderhaze Wretch token by tapping it, adding
5. Activate the Cinderhaze Wretch token's second ability by putting a -1/-1 counter on it, untapping it
6. Repeat from step 4

Results

• Infinite green mana