Mage of the Infernal Horde

Shadow: {u}{r} (You may pay {u}{r}as an
additional cost when you cast this creature. If you do,
create a colourless 1/1 shadow creature token with
flying and deathtouch that has all abilities this
creature has.)
When this creature dies, it deals damage equal to
its power to any target.
Whenever this creature deals damage to an
opponent, put a +1/+1 counter on it.