Hello reddit! I'm Ben Finkel, a software developer who's been working on the MTG Arena Rules Engine for over five years. This is a card that I designed! It'll be in the Alchemy Horizons: Baldur's Gate (HBG) release.
I designed this card in my favorite weekly meeting, the Card Design Workshop. This is a sort of "club" that any WotC employee who is interested in MTG card design may attend to flex their creative muscles.
Each week we get a prompt for some design hole that needs new ideas. On August 13, 2021, the workshop got this prompt:
Card details: A blue rare enchantment, instant, or sorcery. Its name is “Signature Spells.” We’re looking for a top-down design of a Wizard ability in D&D. From the D&D manual: “You gain mastery over two powerful Spells and can cast them with little effort. Choose two 3rd-level Wizard Spells as your signature Spells.”
(Plus that the card is intended to be a digital design)
This was my original proposal, which ...