Jack of Blades, Ancient Foe

Deathtouch
When Jack of Blades leaves the battlefield, if it
wasn't a dragon return it to the battlefield with
a Mask counter on it.

{3}{b}{r},Remove 3 Mask counters: Jack of Blades
becomes a 5/5 Black Red Dragon with Flying,
Trample, and Deathtouch.
Mask counters are not removed when changing
zones.