Prerequisites
- Gyre Engineer on the battlefield
- Umbral Mantle on the battlefield
- Heartstone on the battlefield
- Umbral Mantle attached to Gyre Engineer
- Gyre Engineer does not have summoning sickness
Steps
- Activate Gyre Engineer by tapping it, adding
- Activate Gyre Engineer by paying and untapping it, giving itself +2/+2 until end of turn
- Repeat
Results
Required Cards 3
Gyre Engineer
Creature — Vedalken Wizard
Umbral Mantle
Artifact — Equipment