Damaru
Damaru is a common Watcher-only relic that grants 1 Mantra whenever you enter Wrath or Divinity stance. Mantra accumulates over time, and at 10 Mantra the Watcher automatically enters Divinity for one turn (tripling all damage dealt). Because Damaru fires every time you enter either of these stances rather than just once, it can rapidly fill the Mantra counter in aggressive stance-switching builds.
The relic is most powerful in decks that frequently cycle through stances, particularly those using Eruption, Vigilance, or cards that shift stances as a side effect. Every stance entry into Wrath or Divinity adds a Mantra stack, so a single turn in which you enter Wrath, exit, and re-enter counts twice. Damaru synergizes strongly with cards that allow repeated stance transitions in a single turn and makes the path to Divinity much shorter. It is a Watcher-exclusive relic and has no effect for other characters.