i was playing magic against my brother and i payed 3 mana and i played my morphling face down but later when i turned it face up my brother called me a cheater he said i cant play it face down cuz it didnt have morph ability but i said its a morphling so of course it can morph but he said if it doesnt say morph on card then i cannot use it but then i said its automatic since it is a morphling it can morph because thats its name and like changeling can change to other creatures so morphling can also morph and then he called me a cheater again and said i lose the game but i still think morphling should be able to use morph what are rulings for this