Myr Battlesphere
Artifact Creature - Myr Construct
| Power/Toughness:
4 / 7
(CMC 7)
When Myr Battlesphere enters the battlefield, create four 1/1 colorless Myr artifact creature tokens.
Whenever Myr Battlesphere attacks, you may tap X untapped Myr you control. If you do, Myr Battlesphere gets +X/+0 until end of turn and deals X damage to the player or planeswalker it's attacking.
- [M3C] Modern Horizons 3 Commander #301 (R)