Agiria, the Purifier

This card can't be destroyed by death touch.
{r}{r}: This card gains first strike and "Whenever
this card destroyes a black creature, exile that card
as long as you control Agiria, the Purifier."
{2}{r}{r}: This card gains "Whenever this card
exiles another creature put a +1/+1 counter on
Agiria, the Purifier."
I don't care what you are. You have sinned.