Quotes: Obvious Rule Patch
A summoned monster cannot summon or otherwise conjure another creature, nor can it use any teleportation or planar travel abilities.
: Turns out most colocation TOSes don't mention beehives. Megan
: I suspect that will soon change.
Additionally, look for rules that stand out to you. Especially things that are oddly specific or that address edge cases. These sorts of rules almost always come out of testing. They tend to be a patch for something that the designers found after the initial design was complete. See if you can figure out why these rules were necessary. Why the game would break down or how players would exploit the game if those rules were missing.