Emeninth, Might of Valkar

Flying. Hexproof.
When Emeninth or another Dragon enters the battlefield, put three +1/+1 counters on
any number of dragon creatures.
{u} - Remove two +1/+1 counters from
a dragon you control.
Counter target spell.
{r} - Remove two +1/+1 counters from
a dragon you control.
Emeninth deals 4 damage to any target.