I just thinked about buffing with like Dominator at OLY, ofcourse we cannot use Mana Potions or anything like that. So I have an Idea!
A lot's of weapons for Mage's at Fighters have Cheap Shot or something like that, if u gonna use that bow or anythink while buffing, it should take you like 100mp for all buff's at Dominator or anything... Also with DarkElf/Elf buffer u have skill Recharge, if u gonna use that skill on ur self, it should recharge ur mana more then it would take XD it cost like 15% cast. speed (if u have weapon with Acumen before u use that Weapon) but its better to use that with CheapShot and then swap weapons to that with ACU :]