Before we take a look at some of the colorless spells we will be seeing, lets take a look the card that will be the catalyst to get this party started, Herald of Kozilek
Each one is meant to classify a different kind of game experience
Intrepid Rabbit Intrepid Rabbit is another solid enough common that pumps something when it comes in, but it also scales nicely with the game thanks to the offspring mechanic
If you're playing a Winter, Misanthropic Guide EDH deck, then wverybody gets to draw two cards a turn, but if you have delirium, you get to cap their maximum hand size, so people will hate you for playing it
Reducing a creature's toughness
Jetfire has an interesting game plan, +1/+1 counters, and artifacts in Mono-blue This is a hard sell, but if you can pull it off, extra mana generation is always powerful