Ancient Joker is a trinket in TBoI: Regambled, a mod for The Binding of Isaac.

RARE | Base price: 8 coins

This Joker is only available while playing as Jimbo or Tainted Jimbo.

Jimbo:
• [suit] cards give X1.05 damage multiplier when scored.
• (suit changes every room)

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Tainted Jimbo: Same effect as base game.

• Check out the trinket description on the mod's external Wiki.
• Download TBoI: Regambled from the Steam Workshop.