Kordvak Endless

Whenever a creature the horde controls dies
you may pay {2}{u}{b}. If you do put that creature onto the battlefield under your control with a sickness counter on it.

Remove a sickness counter from a creature you control: Target hero draws a card.
[Creatures with sickness counters have base
power and toughness 0/1 if the sickness counter is removed exile the creature.]