Without the Celestriad I end up using Osmose pretty often. For better or worse, this basically allows you to use your most powerful [and most MP-consuming] spells and keep your party fully healed on a very regular basis without consequence. This makes the game rather easy. Add this to the fact that gaining access to Ultima, Curaga, Arise, and Reraise is quite easy once you get the second airship, and the entire last half of the game is made extremely easy.

Osmose is basically like having an unlimited supply of X-Ethers. Do people actually even use Tents in this game?