Im wondering if you can Meta. a monster tooken by Mind Control cause i was playin somebody last night and they said you couldnt so would someone please help me out here????

No you cannot tribute the monster because mind control states that the taken monster may not be tributed. This means for any reason including but not limited to tribute summons, ritual tributes, or tributes for other card effects.

Mind Control
Normal Magic
Take control of 1 monster on your opponent's side of the field until the End Phase. This monster cannot declare an attack or be Tributed.


Metamorphosis
Normal Magic
Offer 1 monster on your side of the field as a Tribute to Special Summon 1 Fusion Monster of the same Level in face-up Attack or Defense Position from your Fusion Deck. Monsters used for a Tribute Summon or that are offered as Tributes due to other card's effects are excluded.