Momentum Strike

Momentum Strike is a common Defect attack costing 1 Energy that deals 10 damage and permanently reduces its own cost to 0 Energy after being played. This self-discounting mechanic transforms Momentum Strike from a fair common attack into a free damage source for the rest of combat, providing excellent long-term value.

Once reduced to 0 cost, Momentum Strike becomes a prime target for All for One, which retrieves all 0-cost cards from discard. Feral returns the first 0-cost Attack each turn to hand, and Scrape draws cards while keeping 0-cost draws. Hologram can retrieve Momentum Strike from discard to play it again in its discounted state.

For the Defect, Momentum Strike bridges the gap between standard damage cards and the 0-cost archetype. Against bosses like Test Subject #C10 and Kaiser Crab where fights last long enough, playing it once unlocks its free form for the rest of the battle. Pair it with Claw and Beam Cell for a comprehensive 0-cost damage suite, and use All for One to recur all of them each turn.