The Eternal Bands

When The Eternal Bands enters the battlefield,
create a copy of it except it's not legendary.
Equip that copy to target creature an opponents
controls and equip the original to a creature you control.(You still own and control the copy.)
Equipped creature(s) get +4/+4 and have
hexproof. If either one of the two equipped
creatures dies, exile them both instead and you
draw two cards then return The Eternal Bands
to your hand.