Cosi's Trickster

Zendikar (ZEN) #45 · Rare · Creature — Merfolk Wizard

Mana cost: {U}

Whenever an opponent shuffles their library, you may put a +1/+1 counter on this creature.

She watches the chaos created by the Roil, seeking strength in the patterns of anarchy.

Power/toughness 1/1 · Illustrated by Igor Kieryluk · Released October 2, 2009

Prices

Nonfoil price since August 29, 2026: down $0.02 USD (3.9%) to $0.49 USD; low $0.49 USD, high $0.51 USD.

2009-10-01 · wotc — The cascade ability doesn’t cause a player to shuffle their library, even if that player revealed their entire library. The revealed cards are put on the bottom of their owner’s library in a random order, but they’re not “shuffled.”
2009-10-01 · wotc — If an opponent’s library is empty or has just a single card in it when a spell or ability instructs that player to shuffle their library, Cosi’s Trickster’s ability will still trigger.
2009-10-01 · wotc — Cosi’s Trickster’s ability triggers when an opponent shuffles their library because that player was instructed to do so by a spell or ability that specifically contains the word “shuffle” in its text or (in the case of a keyword ability) in its rules.