Spell damage plays a huge role in decks that run Ras Frostwhisper. In the new set, Mage gets a new Lab Partner 1-drop that, conveniently, has exactly that.
This little minion is the lynchpin of so many synergies, which should give Tempo Mage archetype a new chance this season.
Several new other cards also bring more energy to the deck, such as Cram Session, Wyrm Weaver, and Firebrand.
But the most interesting new piece is Mozaki, Master Duelist, a new Mage legendary that stacks spell damage each time you cast a spell.
It allows you to control the board later in the game, making victory all the easier.