Praetus, Patron of Light

: Praetorian, Praetus is a creature with power and toughness equal to his loyalty counters, Flying, Vigilance, Indestructible.
+1: Praetus deals damage X to target creature, player, or planeswalker, where X is his number of loyalty counters.
-2: This can be cast at instant speed. Counter target spell you don't control. The spell's owner draws a card.