I was surprised not to see this linked here when checking for it to reference for a recent discussion in the Geekery thread, but since I found it by other means, I figured I should post it here for addition to the first post:

For the "D&D Rules and Explanations" section: None-core Spells and Mass Death Ward - The Giant normally treats core spells as common knowledge and everything else as obscure (requiring research) or non-existant, because he cannot assume that his readers are familiar every spell in the game, but can assume most are familiar with the PHB. Also, he was unaware that Mass Death Ward was an actual spell, and his own version in the comic is 7th-level, not 8th-level as the actual spell is.

Zevox