Nicol Bolas, Lord of Snow

Nicol Bolas, Lord of Snow can exile all artifacts in possession of your opponent by sacrificing 1 creature of your choice.
Nicol Bolas, Lord of Snow can not be targeted. To target him, opponent must sacrifice 5 of his creatures of your decision.
He may exile all cards in possession of your opponent by sacrificing 5 cards in your possession of your opponent's choice. You can not sacrifice this card