Elliana, The Aerial Arsenal

Flying
When a sixth Overheat counter is placed on
Elliana, The Aerial Arsenal, transform it.
Destroy target non-land, non-creature permanent,
place 3 Overheat counters on Elliana, The Aerial Arsenal.
Whenever Elliana, The Aerial Arsenal attacks,
place 2 Overheat counters on it.
Whenever Elliana, The Aerial Arsenal blocks,
remove 1 Overheat counters from it.