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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
Illustrator
Igor Kieryluk
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 finishtrend updated 10h ago · prices as of Oct 15, 2026
$0.34 low$0.10 gap
Foil$2.67-10.1%
$2.00 low$1.37 gap
Cheapest playable copy$0.49· across 1 printing· you're viewing it

Price history

last 30 days · set by the window above · each finish on its own scale
Nonfoil$0.49-2.0%30D
30D range$0.49to$0.51Since Feb 2024:H $0.65L $0.37
Foil$2.67-10.1%30D5.45× nonfoil
30D range$2.67to$2.97Since Feb 2024:H $3.89L $1.58

Other printings

1 totalCompare all printings

Found in

4 productsRounded odds
  • Zendikar MTGO Redemption Foil

    Box Set · —

    Nonfoil —Foil 1+ copies
  • Zendikar MTGO Redemption

    Box Set · —

    Nonfoil 1+ copiesFoil —
  • Zendikar Booster Pack

    Booster Pack · $30.68

    Nonfoil under 10%Foil under 1%
  • Zendikar Six Card Booster Pack

    Booster Pack · —

    Nonfoil under 1%Foil —

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.”