Crafting advise

desecrate mana to block, omen of greater exaltation+ prefix omen + perf exalt and hope for gain or spell damage. Omen of light off mana, prefix omen + perf exalt and hope for another gain or spell damage. Desecrate for t1 cast speed

If you want cast speed, you should get the desecration on your suffix. Roll prefix with ritual/perfect exalt, prefix annul/repeat til you get spell dmg and gain stats. Make sure your suffix is filled so you’re only dealing with prefix. With 100div you might have to hold on finishing the craft since you might get some bad rolls and using the ritual that removes prefix gets expensive

• another thing if you reveal the desecration you can choose mana or something you dont want so you can block that and roll just the prefix and then remove the desecration after and move it to your suffix since its already on there

T4 spell damage might be good enough, right?

I would go for desecration 3 times, using a sinistral essence omen (to save you some money).

And pray.

If spell damage don’t appear, cast speed or extra dmg as X might suffice.

I would settle for T4 if your budget is 100 div.

But echoes.