When Tezzeret's Gatebreaker enters the battlefield, look at the top five cards of your library. You may reveal a blue or artifact card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. {5}{U}, {T}, Sacrifice Tezzeret's Gatebreaker: Creatures you control can't be blocked this turn.
Near Mint - £0.30
Lightly Played - £0.30
Moderately Played - £0.20
Heavily Played - £0.20
Damaged - £0.10
Near Mint Non English - £0.30
Lightly Played Non English - £0.30
Moderately Played Non English - £0.20
Heavily Played Non English - £0.20
Damaged Non English - £0.10