Wyvern
Explorer
I find it odd that the description of the Sentinel feat says you don't get the third benefit (attack an enemy who attacks one of your allies) if the ally also has the Sentinel feat. The only reason I can think of why they'd disallow that is to prevent a situation where two Sentinels are flanking an enemy, and no matter which of them is attacked, the other one gets a free attack in. I can see why that might be considered "abusive", but it doesn't make any sense thematically. The description of the feat is "You have mastered techniques to take advantage of every drop in any enemy’s guard." There's no logical reason why your training would be less effective just because your ally has also had the same training. If two players want to both take the Sentinel feat so that they can team up like this, shouldn't they be rewarded for good planning and tactics? Or is it really that overpowered?