Amoeboid Changeling + Breaching Hippocamp + Spawning Pit + Valkyrie's Call

WU identity

Commander legal

The 4 combo pieces

• Amoeboid Changeling
• Breaching Hippocamp
• Spawning Pit
• Valkyrie's Call

What must be in place

Amoeboid Changeling does not have summoning sickness.

How to execute it

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

What the combo produces

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