@ Grogin

For Caduceus though not so much so for tank the Guildhest that helps would be Ward up (lvl 40)
More than a Feeler well basically is a reverse of Garuda Satin Feather.
Solemn Trinity (lvl 40) is sort of a minor simulation of Turn 4 Coil ST training.

I would say that Aurum Vale is a better training place than Amdapor Keep even if you get higher level gear that place can still get you killed whereas you can overpower AK with gears. As for Garuda she trains your tank positioning and awareness which will sorta come in handy in Turn 4 as OT. Whereas Titan trains you your natural instinct. Do alot of Titan and you just know when he is about to do Rock Buster and Mountain Buster to be ready or even clip a 3 seconds blind in it. Such internal timer will be good when you MT Turn 4 and MT/ST Turn 5 cause you need to expect the Skill+Melee of the Juggernauts and impending Death Sentence to selfcast Stoneskin right after a melee hit and before the Death Sentence cast.