Forum:Using dark dimension instead of ritual card

alrite so my buddy told me since magician of black chaos is a spellcaster, you can just use dark dimension instead of ritual of black magic, plus u get to destroy another monster on the field. I was just thinking if that could work, because it would change my whole aim on what spells i use in my spellcaster deck. well sort of but still important. so what do you say should it be legal?