Now, don't get me wrong, Yuna's sphere grid is great and all but Tidus just isn't as magic inclined. I do have a few Teleport spheres I could use but the question is where should I teleport Tidus and Rikku too?
I dont think i finished any grids and beat the game easily. I didnt get ANY level 4 skills if i remember correctly.
as for where to teleport to, maybe take tidus through auron's tree?
Thats all i cna suggest...
Another possible route is to get all of Yuna's Aeons their overdrives and use those up, THEN go for the above.
Sanctuary Keeper was easy, just slap a reflect on him, move all your characters in, put Bio on him and a couple of Auron's breaks, then beat him up a little. If you did what you were supposed too and have Yuna at Grand Summon, just summon Bahamut and lay down two Mega-Flares.