A nice aspect of the Game Changerse list is that it allowed cards like Coalition Victory, which players had previously wanted unbanned, to become legal again, but restricted to higher-level play
Folklore around enchanted books often treats writing as a bridge between ordinary reality and a hidden world
You want to fill your inkwell fast so you can get big, beefy characters on the board at speed
To condense the card as much as possible: if you target exactly one opponent or a permanent an opponent controls with an instant or sorcery, and nothing else, Zevlor copies it for each opponent you have
Aragorn and Arwen, Wed Aragorn and Arwen, Wed can buff all your creatures consistently and gain you a lot of life
A spell to kill one creature might be an instant, while a spell to kill all of your opponent's creatures is more likely to be a sorcery