2. Dimensional Bolt is mostly crap. It's unreliable, so often ends up ruining whatever you were trying to do with it, and is also low damage. It is preferable to just have a source of blood, such as the elf racial Flesh Sacrifice, to gain access to the better Incarnate/Totem options. Bolt is also the only Summoning ability that scales off of Int (or any Stat, for that matter), which often gives people the impression that Summoning is an Intellect supported Skill tree, when in-fact Incarnates and Totems do just as well for a build using any other Stat.
Whatever you were trying to do with it? Well if you were trying to change a surface or hit an enemy with a specific damage type, or deal direct damage to an enemy then yes, it probably is wrong for the job.
That is because you are trying to use a wrench to hammer in a nail.
Dimensional Bolt is very good for its specific purpose, which is to provide a way for the summoner to create a surface to place a summon on. If you place that surface off to the side, it won't interfere with existing surfaces.
Elemental totems being worse than blood ones sounds more like a problem with elemental damage totems than with Dimensional Bolt. Bolt is a magical attack, so it scaling off of INT is fine. Especially because it is intentionally not best used as a direct damage attack.
Super Charger might have WAAAAY more purpose once other summons are in the game.
Giving it to a Fire Elemental who is on their last turn, for example, or is about to die... Would be quite helpful, especially with the explosive finish.
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Also I think I know why there is a duration on the incarnate.
It lasts 8 turns and has a 4 turn cooldown.
It lasts 10 turns and has a 6 turn cooldown.
