Ace, sleepless body

indestructible, deathtouch. Damage dealt by Ace, sleepless body cannot be prevented.
If Ace, sleepless body deals damage to a creature, that creature loses indestructible.
at the end of each phase, choose a random creature or player. Ace, sleepless body deals to that creature or player damage equal to its strength. If a creature under your control was destroyed this way or if Ace dealt damage to its owner this way, transform it.