Experimental Sliver

Shroud, Islandwalk
{u}{b}, {t}: Look at target player's library, you may
exile any noncreature an nonland card from it.
Shuffle the library. Put a knowledge Counter on Experimental Sliver.(If you activate this ability
more than five times in a game. A player from outside
the game now controls Experimental Sliver, and can
cast the exiled card's without paying their mana cost.
That players turn is next and that player has 10 life.)