Shipbreaker Kraken is a rare Creature — Kraken card from Commander Legends (CMR), collector number 404. Current market price: $0.34, TCGplayer market prices via Scryfall.
{6}{U}{U}: Monstrosity 4. (If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.) When this creature becomes monstrous, tap up to four target creatures. Those creatures don't untap during their controllers' untap steps for as long as you control this creature.