Equipped creature gets +3/+0.
Equip (: Attach to target creature you control. Equip only as a sorcery.)
The only blow that matters is the killing blow.
Illustrated by Nic Klein · Magic 2012 · #209
There are no rulings for Greatsword.
Equipped creature gets +3/+1.
Equipped creature gets +4/-1.
Equip
Equipped creature gets +3/+3.
Equipped creature gets +1/+2.
Equipped creature gets +5/+0.
Equipped creature gets +2/+2.