Crescendo

Crescendo is a Watcher common skill that enters Wrath stance and has the Retain keyword, allowing it to persist in hand across turns if not played. Wrath doubles all attack damage dealt (and doubles damage received), making it the core damage-amplifying stance for the Watcher. Crescendo lets you enter Wrath on your schedule — hold it until you have a hand full of attacks, then play Crescendo followed by all your attacks for massively amplified damage. The Retain keyword is essential because it means you don't have to waste Crescendo's slot by drawing it on a bad turn.

Crescendo is a cornerstone of Wrath-focused Watcher builds. Because it Retains, you can draw it, hold it for 1-2 turns, accumulate attacks in hand, and then unleash the whole combo at once. The ideal turn is: enter Wrath with Crescendo, play attacks with doubled damage, then exit Wrath via a stance-exit card to stop taking double damage. Crescendo's upgrade removes the energy cost, making it 0-cost — a free Wrath entry that preserves all your energy for dealing damage is extremely powerful in aggressive attack chains.