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.
![Myr Battlesphere (Ripple Foil) [Modern Horizons 3 Commander]](http://paradoxtcg.com/cdn/shop/files/553058_45987c88-6c6e-4e58-9252-f636c9b4afe1.jpg?v=1776265134&width=1445)
