Veigar, Tiny Master of Evil

Whenever you cast a targeted spell or ability that
kills 1 or more creatures, Veigar, Tiny Master of
Evil gains a +1/+1 Counter.
Whenever one of your spells or abilities would
deal damage they deal +X damage where X is
the amount of +1/+1 Counters on Veigar,
Tiny Master of Evil.
{u}{t}: Veigar, Tiny Master of Evil deals 1 damage
to any target.