Equipped creature gets +2/+0, has
vigilance (Attacking doesn't cause this creature to tap.), and is a Knight in addition to its other types.
Whenever equipped creature attacks, create a 2/2 white Knight creature token with
vigilance (Attacking doesn't cause this creature to tap.) that's attacking.
Equip (: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)