Cooperating Contractor

Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield.
They remain paired for as long as you control both
of them.)
As long as Cooperating Contractor is paired with another creature, each of those creatures have
"When this creature becomes the target of an
assassin spell, if it is paired with another creature,
copy that spell. The copy targets this creatures
paired creature."