The Knight, Radiance's bane

First Strike
Charms power Whenever you cast an enchantment or artifact spell, The Knight gets a +1 /+1 counter.
Soul energy Whenever a creature you don't control dies, you get a souls counter.
Focus{t}, pay X soul counters: You gain X life
Vengeful spirit {t}, pay X soul counters: The Knight deals X damage to any target.