They hit the spires!

Nonsense. The shadow brotherhood clearly cast a spell of destruction within the spires themselves.

All these responses and no obvious mention of the Pentagon, which was a target on 9/11. The hexagon is like, as others stated, a reference to the game board most people play on for D&D and other games

Hexagons are also the bestagons

I think it's because alot of ttrpg' use hex grid maps (some for combat, but mostly for travelling long distances)

Maybe the "hex" part because wizards