Maybe this is more convenient and cheaper than building a pc . <| sep |> I ' ve been running him and Day ' s Undoing both as a 2 of with a reasonable amount of success . It ' s mostly a meta play . It ' s almost impossible to lose with a turn 2 Tezzeret , and there is sooo much dredge and control in my meta which lets turn 2 or turn 3 Day ' s Undoing accomplish an insane amount of work . I ' ve cut the red from the deck entirely and run 2 Darkslick shores main no galvanic blasts at all . This works well for me since there are very few infect players in the area , but not running galvanic blasts makes a matchup like infect where you need interaction very very tough game 1 . I very much disagree with saying we don ' t want Tezzeret in our opening hand . Getting a turn 2 or 3 Tezzeret in play is gamebreaking , and slamming his 1 as he comes out turns you from beatdown to control in some matchups since he threatens to ult and win the game the very next turn . I absolutely love love love him in the mirror , to the point I ' ve cut from 2 ancient grudge to 1 in my sideboard and have considered cutting my one ghirapur aether grid . All in all , it ' s a slightly different style of affinity but still lets you get the nut draws and the deck runs very smoothly . Really depends on your localtournament meta though , since not having galvanic blasts sucks ass vs infect and day ' s undoing is an uncastable card against burn unless you ' re on the play and slamming it turn 2 , which still feels amazing regardless of their 22 guide on the battlefield . Drawing Day ' s Undoing makes the dredge matchup laughably easy .