Grounded Angel

Put a -1/-1 counter on Grounded Angel:
create a 0/1 green Plant creature token.
When a player casts a red spell, remove all -1/-1 counters from Grounded Angel. It becomes a 4/4
red Angel creature with haste and spark 2
(whenever this creature becomes blocked, the
blocking creature gets -0/-2 until end of turn) and
loses all other abilities.