Partner with Scion of the Moon
(When this creature enters the battlefield, target player may put Scion of the Moon into their hand from their library, then shuffle.)


, Remove a +1/+1 counter from Scion of the Sun: Put a +1/+1 counter on another target creature.
hm. this really doesn't need to be uncommon on its own though, and I'd prefer common so you have more chance of lining them up in draft