Grim reaper

The grim reaper is well known belong mortals from the underworld from its capacity of teleporting and killing really quickly, although thought to be immortal or unstoppable, its only weakness is light.
If you play a light card against him 5 time, he dies but if its only one, two, tree or four time, it become stunned for 5 turns
If played, it instantly kills an active creature for the cost of nine mana and can only be used once per turn
If stunned by a light creature, can get out of the stun with a skul