Roe, Harbinger of Ticks

Deathtouch.
When this card enters the battlefield put x +1/+1 counters on Roe, Harbinger of Ticks where x is the amount of mana used to cast it.
When Roe, Harbinger of Ticks leaves the battlefield put a +1/+1 black tick token creature onto the battlefield for each counter on Roe, Harbinger of Ticks.
"His fur is blight and he brings with him that which bites in the night."