I dont really like either of the titans in the command zone
Theyre nifty spells i guess but after you cast them just to have them die you have to work to get enough cards into the yard to get them back. Chances are theyre not escaping for several turns after theyre cast.
If i had to pick uro is better just because u/g is stupid levels of powerful in edh
I really think theyre all just better in the 99 where you can kind of forget about them until later. Its a bit wasted potential, idk