I’m still in Act 1 but I’ve found that Sanctuary is amazing compared to its regular 5E counterpart. I’ll have Shadowheart use Warding Bond on my paladin, Bless the whole party besides herself, and protect herself with Sanctuary. Powerful early on, there may be better things you can do later.
Sanctuary has had a pretty big buff from the Table Top, from "Wis Save to Attack Target" to "Can't Attack Target". It's so good in fact it has a permanent preperation slot on Shadowheart alongside Command, Guiding Bolt, and Healing Word.