Sentinal is a thorn in our sides

[Vexerus]

You guys talk as if sentinel is only good in Ifrit fight. I have sentinel and second wind II in the same spot on EVERY class. Even mages. Hell I use sentinel on mage classes as often as I use it on other classes. Sentinel is that "game breaking" ability that is useful in every battle. That's why it's so important. Afraid to pull hate with your curaga? Didn't think you could solo 5 lv 50+ mobs on THM at once? Sentinel GO.

Edit: I'm tryin to say you should want to get Sentinel not just for Ifrit but because really it is the best ability in the game and makes all fights easier for any class, solo or group.