You can only take one reaction per round of combat, so you could only have made the Sentinel reaction attack against one of them. And if you had made a normal Opporunity Attack already, then you wouldn't have been able to make the Sentinel attack. The same applies to any other reaction you might have, like Deflect Missiles.
Baldur's Gate 3
All things BG3!
Baldur’s Gate 3 is a story-rich, party-based RPG set in the universe of Dungeons & Dragons, where your choices shape a tale of fellowship and betrayal, survival and sacrifice, and the lure of absolute power. (Website)
Spoilers
If your post contains any possible spoilers, please:
- Use the text [SPOILER] at the beginning of your title, do not include any spoilers in the title.
- Use the appropriate spoiler markup to conceal that content in the body of your post.
Thank you!
Ah! Okay, so even more limited, since normal AoO and reactions apply. Thanks!!
Reactions take a resource like an action, bonus action, etc do. You can see the resources that each reaction you have takes from your character window, there is a reaction button at the top somewhere. The purple star is the reaction resource and you should find that sentinel takes one of those, therefore you can only use it once per turn.
Thanks for the info on reactions and the star. Didn’t understand that. Thanks!
It's a once per turn thing, and it'll use up your reaction. So no other opportunity attacks, etc. until next turn