Gentle Crash Landing

You may cast spaceship cards from your
graveyard. For each spell cast this way, put 3
-1/-1 counters onto that spaceship.
Whenever a spaceship you control with a -1/-1
counter on it leaves the battlefield, exile it.
Fleet — As long as you control a destroyer,
cruiser, and battleship, whenever you exile a spaceship you control, gain 4 life.