Prerequisites
- Zaxara, the Exemplary on the battlefield
- Umbral Mantle on the battlefield
- Training Grounds on the battlefield
- Umbral Mantle attached to Zaxara
- Zaxara does not have summoning sickness
Steps
- Activate Zaxara by tapping it, adding two mana of any color
- Activate Zaxara by paying and untapping it, giving itself +2/+2 until end of turn
- Repeat
Results
Required Cards 3
Zaxara, the Exemplary
Legendary Creature — Nightmare Hydra
Umbral Mantle
Artifact — Equipment
Training Grounds
Enchantment