Thran Dynamo + Umbral Mantle + Xenic Poltergeist

Prerequisites

• Thran Dynamo and Xenic Poltergeist does not have summoning sickness.

Steps

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

Effects

• Infinitely large creature until end of turn