MScore: 5.3/10
Cosi's Trickster
Creature — Merfolk Wizardrare
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.
1/1
Illustrated by Igor Kieryluk · Zendikar · #45
Rulings for Cosi's Trickster
3
2009-10-01
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.
2009-10-01
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
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.
Format Legality
8
Duellegal
Brawlnot legal
. When you do, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)
: Shuffle this creature and target creature with a stun counter on it into their owners' libraries.
