They are cautious with their body language and facial expressions. Any stray movement could betray the positions of the troops they protect and cost many lives.

Aerie Mystics

Flying
{1GU}: Creatures you control gain shroud until end of turn.

Flying
{1}{G}{U}: Creatures you control gain shroud until end of turn. (They can't be the targets of spells or abilities.)

Commander Anthology

Commander 2013

Flying{1}{G}{U}: Creatures you control gain shroud until end of turn. (They can't be the targets of spells or abilities.)