Alright. After forming the four hand seals, one induces an illusion on the opponent of four Bangle tigers rising from the ground below them. These Bangle tigers then pounce, in a certain formation, and lunge at the opponent, aiming to pin them down. Due to the heavy weight of the tigers, this would be quite easy since each weighs enough to take down a person, and there's four here, so.. Anyway, these tigers then also bite and claw at the opponent, where the area can also be specified by the caster, making it a bit more diverse. As stated before, within the illusion, the opponent is pinned to the ground. Now, in reality, the opponent would topple over as well, due to the force applied and the overall strength of the tigers. After two turns, the opponent is rendered unconscious due to trauma, which can be attributed to the pressure and the loss of blood.
The cool thing is that it doesn't limit what Genjutsu you can use in the same turn, so this would make for a great layering. The technique in itself lasts for up to two turns, making it even more useful, continuing to abuse the opponent if they can't break it. As they are pinned to the ground by force and pressure, forming a hand seal for Kai would be difficult (its like a pseudo paralysis), leaving them with only Pain release and a Surge (which would have to be S rank). Now, if one had first done an S rank Genjutsu, with some bad ass effects, and then this, which pins the opponent to the ground, they'd probably not be able to break it that easily. It's great to use in conjunction with techniques that happens almost immediately afterwards and emerges from the ground beneath them.