If a card requires you to discard your entire hand and draw new cards (such as Windfall), Psychosis Crawler will not die since state-based actions aren't checked until the spell finishes resolving, and you'll have a hand of cards once it does, keeping Psychosis Crawler alive
If an expertise spell allows you to cast a split card, you may cast either half or, if that split card has fuse, both halves
Youll either get to shrink four threats into 1/1s, copy the best threats around, or a combination of both
You can find the most recent lists from the latest tournaments in the Tournament Archive
Some manufacturers make cube "shells" for this very purpose, which are basically just really skinny versions of deck boxes, built to hold only 15 cards - the size of a Booster pack - at a time