Valkyrie's Call + Amoeboid Changeling + Spawning Pit + Dominating Vampire

Prerequisites

• Amoeboid Changeling does not have summoning sickness.
• You control at least X Vampires.

Steps

1. 1Activate Amoeboid Changeling's second ability by tapping it, removing all creature types from Dominating Vampire.
2. 2Activate Spawning Pit by sacrificing Dominating Vampire.
3. 3When Dominating Vampire dies, Valkyrie's Call triggers, returning Dominating Vampire from your graveyard to the battlefield as an Angel with flying and a +1/+1 counter on it.
4. 4When Dominating Vampire enters the battlefield, it triggers, untapping Amoeboid Changeling.
5. 5Resolve the Spawning Pit ability, putting a charge counter on it.
6. 6Repeat.

Effects

• Infinite charge counters on a permanent
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers