Tuvala ORe doest exist anymore -you use now Timefilled Blackstones also for repairing your Gear and exchanging for Tuvala Accessories

additionally, you can get your tuvala materials from any monster in valencia, mediah, and kamasylvia. a LOT of players grind polly's forest zone (little mushroom guys) or cadries and bashims in mediah. some players can run wayyy west to titium valley and kill the monsters there because they give really great EXP, but it is far. if you open your map and click on the different monster zone icons, you can see seasonal pop up missions that will give you additional mats and also daily/weekly missions for the zones too. all will help you on your journey. hope this helps!