The Watcher in the Water is a mythic Legendary Creature — Kraken card from Tales of Middle-earth Promos (PLTR), collector number 75s. Current market price: — (foil $6.45), TCGplayer market prices via Scryfall.
The Watcher in the Water enters tapped with nine stun counters on it. (If a permanent with a stun counter would become untapped, remove one from it instead.) Whenever you draw a card during an opponent's turn, create a 1/1 blue Tentacle creature token. Whenever a Tentacle you control dies, untap up to one target Kraken and put a stun counter on up to one target nonland permanent.