I know its been a while and others probably have said things but just thought I’d remind that in the last episode Yasha & Beau tried to use Sentinel on the Katogeist at the same time. When 2 character have & try to use that feat it cancels out and can’t be used It cancels out on the “if it attack’s a creature other than you”. They both get opportunity attacks if the creature leaves their space, however, which still reduce speed to 0. 🙂
— Matthew Mercer (@matthewmercer) December 1, 2019
Adding a question. Last episode when Beau & Yasha were flanking the Caedogeist & she cast darkness. The darkness imposes disadvantage on said opportunity attack, but wouldn’t the flanking then impose advantage making it a straight roll? Asking as a legit question from a newbie xD In my mind, it’s hard to “flank effectively” when you can’t see, so I would rule the flanking advantage might not contribute here. Just my 2-cents. 😉
— Matthew Mercer (@matthewmercer) December 1, 2019
“You can make an opportunity Attack when a Hostile creature *that you can see* moves out of your reach.” – 5E SRD
You can’t make an opportunity attack *at all* if you can’t see them. FYI.