Lark shenanigans are the best. I'm slowly trying to push a Mardu "2-power or less" theme in my Cube, what with Lark and Alesha (and other cards I guess) caring about that number. Guide is the only pro-color creature in my cube I'm not actively trying to replace. One of my drafters requested it by name a while back during an expansion, and will never draft anything that doesn't include white.
Gatherer on "power 2 or less"
Looks interesting. Mentor of the Meek and Raid Bombardment seem good. Goblin Tunneler looks fringe playable. Imperial Recruiter obviously good.