You do realize that you can still use bubble with the top tree, right? They even have Saint 14s helm with the same blinding perk in this game...
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yeah but it only has Armor of Light which is good, but useful in a lot less scenarios than say Blessing of Light
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From a buffing standpoint maybe, but bubble in this game is more or less an "oh shit" super than anything else. For buffs, turn to warlock. I'm not against more options for utility, I just don't think they're necessarily needed.