The Berserker Armor

Equipped creature gets +2/+2 and has
lifelink and menace.
At the beginning of your upkeep, if this
equipment is attached to a creature, lose 3 life.
Equip {p/b}{p/r}
Wearers of the armor are aptly named Berserkers,
due to the superhuman strength and inhuman ferocity
they are bestowed.