So, lets take a look at which of these Edge of Eternities precon Commander decks is right for you
Unless otherwise specified, yes
The Shadow Creatures' lack of blocking ability as near as doesn't matter since you only need a few of them to wreak havoc and can still have a strong defense of other creatures
I honestly cant say how the AI involved in this process compares to Hearthstones - which has improved a lot over the last season or two - but it didnt do anything too obviously silly
Eternal Witness Green cant search your library for any card, but it can get any card from your graveyard, so in the late game, Eternal Witness effectively becomes a tutor, and as a creature, there are a lot of ways to reuse its effect
If your clerics are dying, so much the better