Thanatos, Reaper of Sin

As long as your devotion to black is less that nine,
Thanatos, Reaper of Sin is an enchantment.
Trample, Haste, Hexproof, Indestructible
{b}{b}{t}, Deal ten damage to target creature that
dealt damage in the last three turns.
{b}{t}, Place a sin counter on target creature.
When there are three sin counters on the field,
exile all creatures that have a sin counter on them.
As the God of Sins, Thanatos should not be
trifled with.