Mirrored Depths is a rare Plane — Karsus card from Magic: The Gathering (Magic Online Promos, PRM).
Rare
Magic Online Promos (PRM)
Mana Value
0
Card Text
Whenever a player casts a spell, that player flips a coin. If the player loses the flip, counter that spell.
Whenever chaos ensues, target player reveals the top card of their library. If it's a nonland card, you may cast it without paying its mana cost.
