Boots of Omnis Ward (OMN204) - Omens of the Third Age Cold Foil

If you've been dealt arcane damage this turn, this gets +1Defense.
Instant – TAP your hero, destroy this: Prevent the next 1 damage that would be dealt to you this turn.
Temper (When the combat chain closes, if this defended, put a -1Defense counter on it, then if it has 0Defense, destroy it.)