Dragonhawk, Fates Tempest Dragonhawk, Fate's Tempest does a little of everything: You get a big flying dragon, impulse draws, cast-from-exile synergies, power-matters synergies, and burn
Sevinne, the Chronoclasm Sevinne, the Chronoclasm works well because there are so many synergies surrounding it, like Secrets of the Dead and Torrential Gearhulk
Are we winning this game already? They Niv-er stood a chance! Lol. I know, thats not really canon, but these are the things that go through Izzet players minds while they wait for you to pass priority so they can cast their entire hand on your end step
Its easy to see why this is going to be good
It has nice high toughness (it might just be 3, but that is a lot for a one drop) and so handles well in combat and against soft removal