Myrkul, Lord of Bones + Cinderhaze Wretch + A Realm Reborn

Prerequisites

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Steps

1. 1Activate Cinderhaze Wretch's second ability by putting a -1/-1 counter on it, untapping it.
2. 2Repeat step 1 until Cinderhaze Wretch dies as a state-based action due to having zero or less toughness.
3. 3Myrkul 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. 4Activate the Cinderhaze Wretch token by tapping it, adding one mana of any color.
5. 5Activate the Cinderhaze Wretch token's second ability by putting a -1/-1 counter on it, untapping it.
6. 6Repeat from step 4.

Effects

• Infinite colored mana