Best path for buff type mage

[REDevilLord]

Im creating a new account only for buffing my main character, i need to know the best bfuf path
Im currently think its wizard-cleric-priest-element master- rune master. All i need is buff, i dont need any great healing.
IF you know the other best path please tell me.

[Nyalida]

For full support RM go wizard > sorcerer > bishop > rune master which includes heals AND buffs but according to your preference you can simply just upgrade buffs