Guide: How To Thaumaturge

[Catapult]

If you're doing ifrit you're most likely level 50 right? you have a trait onto sanguine rite which adds def when used, so when ifrit pops spikes, make sure you're stoneskinned up, when ifrit jumps pop sanguine rite. You won't need sentinel, but if you could pop it , it would help, more def always helps there.

To clarify, Sentinel doesn't increase your defence. It gives you damage reduction, which is why it is so effective against Hellfire/Memento Moogle.