Battle Myrsphere

When Battle Myrsphere enters the battlefield, reveal cards from the top of your library until you reveal a battle card. Put it onto the battlefield, and the rest on the bottom of your library in a random order. Whenever Battle Myrsphere attacks, you may tap X untapped battles you control (so they're oriented like a

regular Magic card). If you do, Battle Myrsphere gets +X/+0 until end of turn and deals X damage to the player or permanent.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o3qtn1kh7pb1ha1n2zk29.