Strixhaven

Grant demonstrate to every instant and sorcery in the pod and you turn each cast into a public negotiation: the copy only happens if you also hand a copy to an opponent, who picks their own targets. That is the join this plane is built around, and it cuts both ways. Copy a card-draw spell like Opportunity and an opponent draws right alongside you; copy a piece of targeted removal and you have just armed the table with a second one. The copy is optional precisely so you can decline the spells that help the pod more than they help you: some scale cleanly when shared, others you would rather never gift. The chaos trigger keeps the whole engine on one axis, returning an instant or sorcery from any graveyard to hand so the next demonstrate has fuel. Both halves point at the same card pool: the static multiplies your spellcasting, the die multiplies your access to it. What makes this coherent as a Planechase design is that its static ability and its chaos trigger are the same idea in two forms, rather than two unrelated effects sharing a card. It commits fully to the spellslinger identity instead of offering a neutral board that happens to reward one, and the demonstrate framing carries the flavor of the five colleges to the table without binding the plane to any single color.