Blade of Binding

Blade of Banishing costs {w} to cast if an opponent
has three or more creatures.
Flash
When Blade of Banishing enters the battlefield,
attach it to target creature and exile target creature
an opponent controls, its controller gains life equal
to its power
Equipped creature gets +1/+1 and gains lifelink
Equip {w}
—
No one ever gets to see anything after the sword