Airbag

{1}, {t}: Target creature you control gains flying
until end of turn. If it doesn't have a
+1/+1 counter on it, put a +1/+1 counter on it.
{2}, {t}: Target creature gains undying (When this creature dies, if it had no +1/+1 counters on it, return
it to the battlefield under its owner's control with a
+1/+1 counter on it.) until end of turn.

"In case of emergency, apply elevation."