Shadowshroud Paladin

{b}{b}, Pay 2 Life: Shadowshroud Paladin gains
Shadow until end of turn. (It can block or be
blocked by only creatures with shadow.)
Shadowshroud Paladin doesn't untap during
your untap step.
Whenever you are damaged by an attacking
creature, untap Shadowshroud Paladin.
"We who would bring the light to others must
not ling to it in selfish indulgence."