Geez... When I designed Osiris, I thought he would be much harder than this.
To those who don't know, YES, I was the one who designed Osiris. I submitted this in the Design a FG contest, and I must say that I'm extremely honored to have Osiris to be made into a real FG.
Sure, he could be easy with a specific counter. However, if you use a rainbow deck... You'll have to quint everything for it to not be devoured.