Mosejin

Flying, Ward {2}
When Mosejin enters the battlefield, Look at each
opponent's hand, exiling one card from each
opponent's hand and placing an # counter on it.
Opponents may cast cards with # counters for as
long as it remains exiled, and may spend mana as though it were mana of any type to cast those
spells. When they do copy it, you may choose new targets for the copy.