Sunspot Mace

Lifelink doesn't cause players to gain life.
Deathtouch doesn't cause creatures to be destroyed.
Equipped creature has "Whenever this attacks, you may exert it. If you do, for each instance of lifelink or deathtouch on the battlefield, this creature deals 1 damage to any target."
Equip — Pay 3 life, {2}{w}{b}{r}