Ancient Vulcan Gun

Equipped creature gets +4/-1 and has sweap
(Whenever a creature with sweap deals combat
damage to a creature, it deals that much damage to
each other creature that has blocked or becomes
blocked by the sweaping creature.)
Equipped creature has "{t} — exert:
Ancient Vulcan Gun deals 2 damage to up
to three target attacking or blocking creatures,
4 if you have exerted."
Equip {4}