Aeromoeba doesn't work
I activate Aeromoeba so it becomes a 4/2 and with Battle Plan I give it +2/+0 during my combat step but my Aeromoeba becomes a 4/4 instead of a 6/2.
Not a bug based on the Gatherer ruling, https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=525814&printed=true
"Effects that switch a creature’s power and toughness apply after all other effects, regardless of when those effects began to apply. For instance, if you switch Aeromoeba’s power and toughness and then give it +2/+0 later in the turn, it’s a 4/4 creature, not a 6/2 creature."