Eruption

Eruption is the Watcher's unique starter attack, costing 2 Energy to deal 9 damage and enter Wrath stance (upgrading to cost only 1 Energy). Wrath doubles all damage dealt and received, so Eruption both deals 9 damage and immediately enables a double-damage window for any attack you play afterward. The combination of direct damage and instant stance transition makes it one of the most powerful starter cards in the game.

The upgrade from 2 to 1 Energy is transformative — it lets you use Eruption and still have energy left for a follow-up attack in Wrath the same turn, dramatically increasing your burst potential. Most Watcher decks keep Eruption through the entire run because it doubles as both a damage source and a reliable Wrath entry point. Pair with Consecrate, Sands of Time, or any high-damage attack to maximize the Wrath turn.