Duplicator

Duplicator copies a card in your hand, allowing you to play the same card twice in a single turn without needing to draw it again. This potion effectively doubles the impact of your most powerful card for that turn, making it one of the highest-ceiling potions in the game when used at the right moment.

This potion shines in boss fights where burst damage or scaling matters. Against The Insatiable, duplicating a key scaling card can help you outpace its growing threat. Save it for the Vantom encounter when you need to double your offensive output to close out the fight before its mechanics overwhelm you.

Ironclad can duplicate Reaper to gain massive healing while dealing heavy damage, or copy Demon Form for double the Strength scaling each turn. Silent players should duplicate Wraith Form for extended intangibility or Burst for quadrupled skill effects. Sacred Bark does not affect Duplicator, but Sozu preventing potion drops means you should use it aggressively rather than hoarding it. Necrobinder can duplicate Forbidden Grimoire for devastating results.