73-108 of 681 cards where the rarity is common

Bone Scryer
Boom Baboon
Boomcrew Rookie
Bouncing Bomb
Boxtopus
Brazen Buccaneer
Brightsteel Protector
Brittle Steel
Brothers' Bond
Bubble Bear
Buhru Cultist
Buhru Lookout
Buhru Sentinel
Bull Elnuk
Burgeoning Sentinel
Buried Armory
Bushwhack Trap
Buster Shot
Byrd, The Bellringer
Calculated Creations
Calibrum
Callous Bonecrusher
Call the Pack
Call the Wild
Camavoran Soldier
Capsize
Captive Greyback
Captive Yeti
Careful Preparation
Carved Bladetwirler
Catalyst of Aeons
Caustic Cask
Caustic Riff
Ceaseless Sentry
Celestial Blessing
Celestial Wonder