Brightscale Regent

Flying, lifelink
Outlast {b/g}{w/b} ({b/g}{w/b}, {t}: Put a +1/+1 counter on this creature. Outlast only as a sorcery.)
Each creature you control with a +1/+1 counter
on it has Aegis X. (Whenever this creature becomes
the target of a spell or ability an opponent controls,
counter that spell or ability unless its controller pays X.
X is equal to the number of +1/+1 counters on it)