u/Famous-Magazine-6576

Have Battle of wits in play

Cast shahrazad and begin the subgame

in the subgame, cast spawnsire of ulamog and use the ability to bring in 200 eldrazi you own from outside the game.

Win the subgame by killing your opponents with a hoard of eldrazi, when the subgame ends all cards in the subgame will be shuffled into your main game library.

at the beginning of your next upkeep battle of wits triggers and you win.