Almost all elf spells are creatures, but Lorwyn introduced the tribal/kindred card type, which gave a few noncreature spells like Eyeblight's Ending and Prowess of the Fair the elf subtype
The dissolving Hekma barrier, and the city beyond, are nice story links, while the Lords insectile appendages help it fit in with the other Old Gods of Amonkhet that returned during Hour of Devastation
You should end up with 48 cards in total
This is a first view of what I hope will be one of the most awesome game rooms ever: The shot is from near the top of the steps (which are to the right), standing right in the middle of where the custom RPG pit will be (low, comfortable reclining chairs in a circle)
Whether youre looking for a discard outlet and a way to clear the path for your Reanimator deck in a high-powered Cube, or a discard outlet for a madness deck in something like my Spooky Cube, Collective Brutality is a great tool for the job
None of these mobilize creatures have haste