Kyrel Ren, Restless Undead

Rank IV - Master
Eternal Hatred (If this card would be destroyed, you
may pay Vitality equal to its cost to keep it on the field.)
Blackwing (Place an Infected counter on a card this
card battled. At the start of each player's turn, place a
-1/-1 counter on each card with an Infected counter on
it. When a card's defense value with an Infected
counter reaches 0, destroy it and create a 1/1 Infected Victim Token with Blackwing.)