Amoeboid Changeling + Great Oak Guardian + Spawning Pit + Valkyrie's Call

GWU identity

Commander legal

The 4 combo pieces

• Amoeboid Changeling
• Great Oak Guardian
• 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 Great Oak Guardian.
2. Activate Spawning Pit by sacrificing Great Oak Guardian.
3. When Great Oak Guardian dies, Valkyrie's Call triggers, returning Great Oak Guardian from your graveyard to the battlefield as an Angel with flying and a +1/+1 counter on it.
4. When Great Oak Guardian 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 mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of creatures you control
• Infinitely large creatures you control until end of turn