Glimmer, Glittering Captain

Hexproof, Vigilance
When Glimmer, Glittering Captain, enters the battlefield, exile creature you don't control.
That creature remains exiled until Glimmer, Glittering Captain, leaves the battlefield.
{3}{w/u} Place a +1/+1 counter on each Elf creature
you control.
"Detain them all. You may use lethal force."