Healer's Headdress

The damage prevention is the curiosity here, not the toughness bump. Most equipment that wants to keep a creature alive does so passively; this hands the wearer a repeatable tap ability that shaves a point off anything: a combat blocker, a burn spell, a sweeper that deals exactly enough. One point per activation is a thin fence, and the tap cost is the real ceiling on it. Because a creature can be declared as a blocker and then tapped to prevent damage before combat damage is dealt, the wearer can absorb an attacker and shave the swing in the same combat; what it cannot do is attack while also holding the prevention open. The two extra toughness exists to keep the body worth fielding while it taps, not the other way around.

The double-white reattach line is the design wrinkle. Where the base equip cost is the standard sorcery-speed clock, the white activation moves the gear at instant speed, dodging that timing window entirely. Most equipment strands a creature once it dies or once you want the gear elsewhere, but this can leap to a fresh body mid-combat, reattaching after blocks are declared or in response to removal pointed at the holder. The cheap equip cost is the throwaway; the white activation is the one that earns its keep, letting a deck shuffle the prevention engine between threats without spending a main phase. A fiddly piece of utility built for a color that has always preferred to bleed damage away one point at a time.