Brawler's Plate
{3}
Artifact -- Equipment
Equipped creature gets +2/+2 and has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)
Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)
Horned Helm
{2}
Artifact -- Equipment
Equipped creature gets +1/+1 and has trample.
{G}{G}: Attach ~this~ to target creature you control.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)