Come someone please explain why this would be good ? Or what's so great about making a monsters lower or higher? Only thing I can think of is to run a 3 star deck with possessed dark soul and steal your opponents monsters but idk if that would be good
I think you're missing how, if you have a Ritual monster in your hand, you can use Vunnu's effect to make a monster on your field the exactly level it needs to ritual summon. So you can summon Senju or Sonic Bird, and if you have the Ritual Spell and Ritual Monster, which if you're running something like Sprites Blessing if you're using more than one Light Ritual monster, you have a great set up.