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Cosi's Trickster

{U}

Creature — Merfolk Wizard

ZENZendikar#45rare

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

Finishes
Nonfoil · Foil
Border
black
Frame
2003
Pull rate
about 1 per booster–1 in 1793
Illustrator
Igor Kieryluk
Found in
Zendikar MTGO Redemption Foil · Zendikar MTGO Redemption · 2 more
Printings1EDHREC rank#15,217
CommanderLegalModernLegalStandardNot legal
Format legality

Constructed

StandardNot legal
PioneerNot legal
ModernLegal
LegacyLegal
VintageLegal
PauperNot legal

Commander

CommanderLegal
Pauper CommanderNot legal
Duel CommanderLegal
PreDHLegal
OathbreakerLegal
Tiny LeadersLegal

Arena

AlchemyNot legal
HistoricNot legal
TimelessNot legal
BrawlNot legal
Standard BrawlNot legal
Competitive BrawlNot legal
GladiatorNot legal

Other

PremodernNot legal
Old SchoolNot legal
Penny DreadfulLegal
Future StandardNot legal
Whenever an opponent shuffles their library, you may put a +1/+1 counter on this creature.
1/1
Market · per finishspark updated 35m ago · prices as of 2026-08-30
Nonfoil+2.0%
$0.51
$0.35 low$0.23 gapTCGplayer
Foil+25.8%
$2.97
$1.97 low$0.57 gapTCGplayer
Cheapest playable copy$0.51· across 1 printing· you're viewing it

Rulings

3 · latest Oct 1, 2009
  • WotCOct 1, 2009

    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.

  • WotCOct 1, 2009

    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.

  • WotCOct 1, 2009

    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.”