You're missing a lot actually. There are quite a few cards in this deck that abuse Mishra's ability. I'll give you two examples: Possibility Storm is in play along with Mishra. You cast say Sol Ring putting Mishra's ability on the stack then Possibility Storm's. Here's how they resolve, Possibility Storm resolves getting you the next artifact in your deck (hopefully Blightsteel) then Mishra's ability resolves allowing you to search your deck for the Sol Ring that went on the bottom from Possibility Stormand put it into play. You can do the same for Nether Void by stacking Mishra's ability first then Nether Void your artifact gets countered because you didn't play three then you can search your graveyard for a copy of that card which is the card you casted and put it into play. I'll write a more detailed way to play when I get the chance.
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