Shun, Chosen Successor

Haste
When Shun, Chosen Successor attacks, put a
+1/+1 counter on each creature you control that already has a +1/+1 counter on it.
{r}{g}: Shun gets +1/+1 until end of turn. If mana
from Gold was spent to activate this ability, put a
+1/+1 counter on Shun instead.