Slay the Spire 2 Wiki

Card

Aggregate

Gain 1 energy for every 4 cards in your Draw Pile.

Aggregate is an uncommon Defect skill costing 1 Energy that grants 1 Energy for every 4 cards in your draw pile. In decks with large draw piles, Aggregate generates 5-8+ Energy in a single play, enabling explosive multi-card turns. The effectiveness depends on playing Aggregate before drawing too many cards.

Aggregate pairs well with Machine Learning to maintain draw pile size through increased draws, and with Reboot, which shuffles everything back into the draw pile for a massive Aggregate follow-up. Skim and Overclock draw cards efficiently to spend the Energy Aggregate generates. Seek finds key payoff cards to play with the surplus Energy.

For the Defect, Aggregate is a powerful Energy-generation card that rewards careful sequencing. Against bosses like Doormaker and The Insatiable, the burst Energy enables playing your entire hand in one turn. Against Kaiser Crab, Aggregate fuels Multi-Cast or Tempest for massive damage. Play Aggregate early in your turn before card draw reduces the draw pile, and pair it with expensive payoff cards like Meteor Strike.

Details

Card TypeSkill
Cost1
RarityUncommon
TargetSelf
Effect TextGain 1 Energy For Every 4 Cards In Your Draw Pile.

Character

NoindexYes
In GameNot In Game

Guides & Articles

Quick Facts

Type
Card
Confidence
Low
Verified
Mar 12, 2026