Mono blue prison

Return to their owners' hands all creatures with toughness less than or equal to the number of Islands you control.

[+2]: Look at the top card of target player's library. You may put that card on the bottom of that player's library.

[0]: Draw three cards, then put two cards from your hand on top of your library in any order.

[−1]: Return target creature to its owner's hand.

[−12]: Exile all cards from target player's library, then that player shuffles their hand into their library.

Counter target spell unless its controller pays {3}.