The Watcher in the Water is a mythic Legendary Creature — Kraken card from The Lord of the Rings: Tales of Middle-earth (LTR), collector number 354. Current market price: $3.92, 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.
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