Library of Mydryn

When the Library of Mydryn enters the game
or changes controller, place 3 Research Counters
on it.
{t} Spend 1 research counter to find all copies of a
card in your hand and place them on top of the library.
{t} Spend 3 research counters and name a specific
card and put it into your hand.
When the Library of Mydryn has 0 counters, target opponent gains control of it.