Aerona, Martyr of the First

{t}, Put a -1/-1 counter on Aerona: Other
creatures you control get +1/+1 until end
of turn. Preventall combat damage that would
be dealt to target Demon until end of turn.
Activate this ability only during your turn and
before blockers are declared.
Whenever Aerona dies, if she had two or more
counters on her, return her to the battlefield
transformed at the beginning of your next upkeep.