Kevril

Doublestrike
If a creature dealt damage by Kevril this turn
dies, return it to the battlefield under your
control. Exile it at the end of turn.
{2}{t} Eldritch Blast: Kevril deals damage equal to
his power to target creature, and to another at
half his power.
Kevril has 1+X/1+X where X is the number of
creatures exiled by Eldrtich Blast.