Devout of the Depths

Infect (This creature deals damage to creatures in
the form of -1/-1 counters and to players in the form
of poison counters.)

When Devout of the Depths dies, you may put
a -1/-1 counter on target creature.

They can appear from the darkness at any moment!
They seem to fly through the air, dancing on invisible
strings as they silently stalk prey.