White Fatalis

Flying, Indestructible, Dragonblight, Paralysis,
Fear, Overpower
Dragon Lightning— For every creature that has
taken damage, this creature gains 12 +1/+1
counters, this only activates once per turn. After
adding the +1/+1 counters, destroy all of those creatures and deal x amount of damage to all
opponents where x is the amount of +1/+1
counters on this creature
Enrage— When this creature takes damage, it
gains 6 +1/+1 counters