Rahkal, Anchor Bearer

(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 Rahkal is paired with another creature, they both have vigilance and hexproof.
You would expect a weapon labeled the anchor to bear a resemblance to its namesake. You would be surprised to see it's actually a seven-foot long war glaive.