This is the build I would use for a Saint.
We get like over 200 Skill Points, after you get all the heals & Self/group buffs that a healer need, you can really just get whatever you want after that. I like to get the passive buffs just because it makes healers alittle big more sturdy especially if they heal aggro and get mobbed, every little bit helps I'd say : ). I also like to get the mana regen skill just because xD
I also forgot to add the instant attack skills I'd get,
Mage tree - Flash, Magic Whip, Enchanted Shock,
Priest tree - Flash 2, Judgement Arrow
Saint - Never got any of the attacks from the Saint tree but that doesn't mean other players can't, I just like the Chipmunk card xD
[Kyleakin is now a wizard so I can't show you the build I had as a Saint lol unless I make a new char just to show you & to show how I had my hotkeys set out]