Thran Dynamo + Umbral Mantle + Xenic Poltergeist

B identity

Commander legal

The 3 combo pieces

• Thran Dynamo
• Umbral Mantle
• Xenic Poltergeist

What must be in place

Thran Dynamo and Xenic Poltergeist does not have summoning sickness.

How to execute it

1. Activate Xenic Poltergeist by tapping it, targeting Thran Dynamo.
2. Activate Umbral Mantle's equip ability by paying {0}, attaching it to the Thran Dynamo.
3. Activate Thran Dynamo by tapping it, adding {C}{C}{C}.
4. Activate Umbral Mantle by paying {3} and untapping it, giving itself +2/+2 until end of turn.
5. Repeat.

What the combo produces

• Infinitely large creature until end of turn