Battle Myrsphere [Unknown Event] Vintage you may tap X untapped

you may tap X untapped battles you control (so they're oriented like a regular Magic card)

put a number of +1/+1 counters on it equal to the amount of mana this creature produced

All that has been wrought by those who wield the Three will turn to their undoing

Set: Secret Lair Showdown Type: Creature — Rat Rarity: Rare Cost: {1}{B}{B} Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats

Battle Myrsphere [Unknown Event] Vintage you may tap X untappedSet: Unknown Event Type: Artifact Creature Phyrexian Myr Rarity: Common 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, CARDNAME gets +X +0 until end of