Captain's Hook

Equipped creature gets +2/+0, has menace, and is a Pirate in addition to its other creature types.
Whenever this Equipment becomes unattached from a permanent, destroy that permanent.
Equip {1}

Magic Online Promos

Rivals of Ixalan

Equipped creature gets +2/+0, has menace, and is a Pirate in addition to its other creature types.
Whenever Captain's Hook becomes unattached from a permanent, destroy that permanent.
Equip {1}

Rivals of Ixalan Promos

Captain's Hook becomes unattached from the creature it's equipping if you equip it to a new creature, if Captain's Hook leaves the battlefield, if the equipped creature ceases to be a creature, or if Captain's Hook ceases to be an Equipment. (It also becomes unattached if the equipped creature leaves the battlefield, but the triggered ability won't do anything in that case.)