Buffer

Buffer is a buff that completely prevents the next instance of HP loss, consuming one stack in the process. Unlike Block, Buffer does not reduce damage — it negates the HP loss entirely regardless of how much damage was dealt. Each stack of Buffer prevents one instance of HP loss, making it especially valuable against high single-hit attacks.

Buffer is most associated with The Ironclad through certain cards and relics, and it also appears as an enemy ability. Because Buffer prevents a full HP loss instance rather than a portion of damage, it is extremely efficient against powerful single-hit attacks — a single Buffer stack can negate a 50-damage hit. However, it provides no protection against multi-hit attacks beyond the first hit. Timing when to use Buffer-granting effects for maximum efficiency is an important skill.