{Seraph Sanctuary} states when an angel enters the battlefield under my control that I gain a life, which would obviously trigger {Archangel of Thune}. My question is would multiple sanctuaries trigger separately? Such as 2 resulting in 2 counters on every creature and such...
Yes, each one is a seperate card and has its own trigger. Two of them are out? Then 2 "gain 1 life" triggers happen. You would get 2 counters on each creature, one after the other.
And what if I were to {Entreat the Angels} X = 4 with 2 sanctuaries, would all of my creatures get 8 +1/+1 counters INCLUDING the 4 angels I just got?
Yep!
That woulda been nice if I could have gotten it off last game...