Nightblood

tapping and untapping optional. but you can only do one per turn.
{t}, when tapped equipped creature gains +0/+1
{t}, when untapped, spend {p/c}{p/c}{p/c}{p/c} each turn (yours and your opponents)
equipped creature gains +4/+4, deathtouch, if a creature damaged by this card would die, exile it instead.
{6}destroy target shard