Costing just two mana makes this very attractive, but maximizing the commander's ability requires a lot of fiddly game actions while having available to profit
Mosswort Bridges free spell is an incredibly great value when your Commander is big enough to get you 60% of the way towards its Hideaway trigger by itself, and just like with Bojuka Bog, you can end up in the later stages of the game getting an extra spell turn after turn via Life from the Loam and sacrificing it to The Gitrog Monster, so its even better here than it usually would be
In their post, LordTetravus pointed out some wild price disparities in Tarkir: Dragonstorm
You will want a ton of card draw and plenty of mana in a commander deck with Aeve since you'll want to be casting as many spells as you can with all the mana you can muster
No, you cannot respond to mana abilities
Then if there are six or more luck counters on Pick-a-Beeble, claim the prize