When Valkyrie's Sword enters the battlefield, you may pay
. If you do, create a 4/4 white Angel Warrior creature token with
flying (This creature can't be blocked except by creatures with flying or reach.) and
vigilance (Attacking doesn't cause this creature to tap.), then attach Valkyrie's Sword to it.
Equipped creature gets +2/+1.
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.)