Reinforce

How to get it

• In the King of Progress's 9-card deck: a run as this king can start with it, and losing a battle offers cards from your own deck.
• Loot after beating the King of Progress in battle when that king is one of your enemies.
• Merchant: Jack of Magic (tomes and enchantments).
• Joker mode: pick it for a custom deck.

Rest of the King of Progress deck

• MothershipBase
• ExecutionerTroop
• DefenderTroop
• Lab RatTroop
• ConcabulatorBuilding
• ConverterTower
• OverhaulTome
• RecyclerBuilding

Patch history

1. Patch #24 2026-05-25

   Innovator perk (Progress): you now start with Concabulators instead of Reinforce cards. We found the previous iteration to be underwhelming to most players. This should be a considerable buff to Progress early game.

2. Patch #29 2026-07-29

   Reinforce got a full rework. It now gives you +2% HP per second during battle. And heals beyond max HP. It's a card that comes to fill the void left by Vampirism, but offers a much more tangible (and objectively better) buff.

3. Patch #30 2026-09-15

   Heavily improved Reinforce performance.

Lines from the official Steam patch notes since Patch #18 that name this card.