Kanan Jarrus, Jedi Exile

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 Kanan Jarrus, Jedi Exile is paired
with another creature, each of those creatures
has "{u}: Exile this creature, then return it to
the battlefield under your control."