Tantrum
Tantrum is a Watcher uncommon attack that deals 3 damage 3 times, enters Wrath stance, and then shuffles itself back into your draw pile. At 1 energy it deals 9 total damage (or 18 in Wrath) and simultaneously enters Wrath — meaning if played from outside Wrath, the 3 hits themselves are at normal damage before Wrath activates, but you end up in Wrath for subsequent attacks. Because Tantrum shuffles itself back, it recycles permanently without needing to cycle through your discard pile like other cards.
Tantrum's self-shuffling nature makes it valuable in thin deck builds where you want to see key cards frequently. Each time you play it, it goes directly back into the draw pile, increasing the chance of drawing it again next cycle. In a small deck, Tantrum can appear every 3-4 turns. It functions as both a Wrath entry and a multi-hit attacker, and in Wrath it already deals doubled damage on subsequent attacks after triggering. As a 3-hit card, it also synergizes with relics that scale on hit count. Upgraded, it deals 4 damage per hit (12 total, 24 in Wrath).