In my previous post there are 2 videos with psychokino3 onmoyji2, the gameplay is very similar. Psychokino heavy gravity + onmyo toyou = toyou finally hits flying enemies. Onmyoji firefox attribute is a great buff for psychokino. Fix problem of short range on psychic pressure, and fix problem of low damage on gravity pole. With tree and magnetic force you get 2 mob grouping skills, both group 10 targets each.
I feel like onmyoji is a very easy class to play, you cannot mess up skill aiming. Skills are very big and will always hit enemies. Onmoyji has high silver cost and high SP cost on skills. Tree10 with attribute cost over 1000 SP, and tiger with attribute cost over 800 SP per overheat. Toyou consume 900 SP with 2 overheat. Tree with attribute cost 1200 silver per cast. Other skills cost 300 per cast. Cooldown of onmyoji is low, so skills are used often.
For playability: I recommend wizard2 surespell. If you also have quickcast (wizard3 or thaumathurge3 brain attribute), you will enjoy onmoyji more. Quickcast is especially important on elementalist3 Runecaster Onmoyji2 build, to increase skill rotation speed. Turtle shield must not be used on INT build, your SP cannot keep up. Drain SP faster than party of 5 shadowmancers. Turtle shield is a SPR build skill.
I also tried farming onmoyji build with linker and thauma, but the performance is lower than other farming builds. Onmoyji Earth multi hits (tree and toyou combo with linker earth damage attribute) break link too fast. Wizard2 sleep dream attribute doubles damage of tiger howling, it was the most decent combo with low hits. And onmyoji silver cost per skill does not make a lot of sense for cost effective farming build.