Buffer

Buffer is an exceptional Defect rare power that prevents the next instance of HP loss entirely. Unlike Block, which reduces incoming attack damage, Buffer prevents any HP reduction — from attacks, thorns, burn effects, or other sources. This makes it broadly defensive: it fully absorbs one hit of any damage type regardless of magnitude. At 2 energy it can seem costly, but the complete negation of even one large boss hit can be run-defining.

Buffer is most valuable when you anticipate a big unavoidable hit, such as a boss move you cannot fully Block, or a Strength-buffed enemy strike. It also counters self-damage mechanics and burn effects elegantly. Multiple copies stack the prevention charges. Upgraded, Buffer prevents the next 2 instances of HP loss, nearly doubling its value and making it one of the most defensive cards in the Defect's kit. In power-heavy decks, Buffer occupies a natural slot alongside other defensive powers.