I'm expanding my cube size and was planning on putting Aethergeode Miner back in, but I think this is better - I like that it can survive wraths, and that it can get picked up by Alesha while still hitting for a bunch. We're so spoiled by all these 3/1s lately!
I was just about to say "this won't be 3/1 when brought back attacking with Alesha," but I just noticed this card is worded "as long as _____ is attacking, it gets +2/+0." Has anything else been worded like this or is this a new template?
I think that this is solid. The threat of activation can make blocking decisions awkward for an opponent, and if my opponent is going to try to remove it, I think I'm fine trading 4 life for the average removal spell. I may kick Lone Missionary back out again for this.