Claw
Claw is a common Defect attack that deals 3 damage for 0 Energy and permanently increases all future Claw damage by 2 for this combat. The first Claw deals 3; the second deals 5; the third deals 7. This compounding escalation means each Claw after the first becomes progressively more powerful, and in a deck with many copies, the damage per play rapidly outpaces standard attacks.
Claw is the foundation of a specific Defect archetype: pack the deck with as many Claws as possible and cycle through them rapidly. Each Claw fuels the next, and with enough copies and card draw, a single combat can see Claws dealing 20+ damage each. It pairs naturally with Scrape (which filters for 0-cost cards) and any fast-cycle draw engine. Upgraded, the starting damage increases to 5 (5, 7, 9...), giving the Claw chain a higher floor.