Ebony Devil

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 Ebony Devil is paired with another creature, each of those creatures has "Whenever
this creature is dealt lethal damage, create an
X/X black and red Devil creature token onto the battlefield, where X is the amount of lethal
damage taken by that creature."