Typically, when you think of extra turn spells, blue comes to mind, and while most of the best extra turn spells in Magic are blue (all the way back to the original Time Walk), there is a slightly lesser known subset of extra-turn spells that are red
Oh SHIT
Gallery and List of Learn and Lesson Cards Learn Academic Dispute Arcane Subtraction Cram Session Divide by Zero Dream Strix Enthusiastic Study Eyetwitch Field Trip First Day of Class Gnarled Professor Guiding Voice Hunt for Specimens Igneous Inspiration Overgrown Arch Poet's Quill Pop Quiz Professor of Symbology Retriever Phoenix Rise of Extus Sparring Regimen Study Break Lesson Academic Probation Basic Conjuration Confront the Past Containment Breach Elemental Summoning Environmental Sciences Expanded Anatomy Fractal Summoning Illuminate History Inkling Summoning Introduction to Annihilation Introduction to Prophecy Mascot Exhibition Mercurial Transformation Necrotic Fumes Pest Summoning Reduce to Memory Spirit Summoning Start from Scratch Teachings of the Archaics Best Learn and Lesson Cards Eyetwitch Its worth noting that the mechanic is only played a little outside of some narrow cases in eternal formats since it's already left Standard

As for the card itself, Gix is very playable, as both a draw engine and a potent infinite mana sink
This dynamic is apparent in the art, as Red smirks with a closed mouth, while Blue smiles dramatically
But what if you wanted to skip the monster battling part and simply jump to the attacking directly