Restoration Magic seems almost certain to see play alongside or in place of Shardmage's Rescue, Fire Magic is an interesting tool both for and against decks like Izzet Steel-Cutter, and Thunder Magic at least has upside over Shock, though the inability to target noncreatures means it seems unlikely to supplant Burst Lightning
its not uncommon to see players cast spells for 10+ mana
Once youve added the appropriate Signets to your deck, Talismans should be next on the list
It also broke the game's tracking system, with players needing a weird conveyor belt to try to remember which creatures they had already targeted and which ones they didn't
Flash is a great keyword, so why not give it to all your spells
According to various EDH sources, this card sees a surprising amount of play in EDH decks