Cosmo

Plays well with

Cards that turn up alongside this one more often than chance.

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Packages

Synergy bundles this card travels in.

Archetypes

Decks where this card is a defining pick.

Scales with

The more of these your deck has, the better this card tends to perform. We've stripped out traits that merely happen to travel alongside, so what's left is the real pull.

• Guardian

Errata & Rulings

• Ruling Doctor Strange: Is Doctor Strange’s Invocation deck a legal target for Cosmo’s ability? Hall of Heroes (rules 1.0–1.4) · may be outdated
• Ruling Expansion card questions: Cosmo says: Interrupt: When Cosmo attacks or thwarts, name a card type, then discard the top card of the… Hall of Heroes (rules 1.0–1.4) · may be outdated
• Ruling Mad Titan’s Shadow: I just wanted to make sure that Garm (and similar minions) always engage the first player. So when the first… Hall of Heroes (rules 1.0–1.4) · may be outdated
• Ruling Mad Titan’s Shadow: What happens when the basic Cosmo ally is in play and the side scheme Secure the Landing Pad gets defeated… Hall of Heroes (rules 1.0–1.4) · may be outdated
• Errata Cosmo: Changed “a deck” to “a player deck or the encounter deck”. Removed reminder text Rules Reference 1.7
• Errata Cosmo: Changed “a deck” to “a player deck or the encounter deck”. Removed reminder text Rules Reference 1.7