Swain, The Ravenous Flock

Whenever a creature your opponents control dies
or becomes the target of one of your spells or activated abilities, Scry 2, then you may
regenerate Swain.
{3}{b}{r}: Swain gains flying and +0/+3 until end
of turn. Swain deals 2 damage to creatures
opponents control. Activate this ability only once
per turn.
"Fear the power you do not see"