Forum:Phantom of chaos= easy rituals?

Phantom of chaos has the ability to remove an effect monster from the grave and gains its effect, but what if the effect is a ritual monster that you discarded from your hand or grave....?

You can't special summon rituals from the grave without ritual summoning them first... but I wonder remove it from grave and gain its effect, i've searched but I haven't found anything that says you can't

I've been wondering this because I find that effect really powerful,,, specially if you combine it with   Demise, King of Armageddon   to clear the field easily, and change the flow of the duel....or just to make a direct attack with some other monsters....

does anyone know if this doesn't break any rules,or any thing.....?