The piasa's spiked tail is segmented and up to three times the length of its body. When the piasa takes 25 or more damage in a single turn, a segment of its tail is severed. When the first segment is severed, the tail attack's damage type changes from piercing to bludgeoning and deals 1d8 less damage. When the second segment is severed, the tail attack no longer deals damage, but it can still grapple. When the third segment is severed, the piasa can't make tail attacks. The tail re-grows at a rate of one segment per long rest.