What's not to like, even at 5 mana

Extus Wishboard Skeleton View on Archidekt Commander (1) 1 Extus, Oriq Overlord // Awaken the Blood AvatarExtus, Oriq Overlord // Awaken the Blood Avatar Wishes (17) 1 Academic DisputeAcademic Dispute 1 Death WishDeath Wish 1 Enthusiastic StudyEnthusiastic Study 1 EyetwitchEyetwitch 1 First Day of ClassFirst Day of Class 1 Golden WishGolden Wish 1 Guiding VoiceGuiding Voice 1 Hunt for SpecimensHunt for Specimens 1 Igneous InspirationIgneous Inspiration 1 Mastermind's AcquisitionMastermind's Acquisition 1 Poet's QuillPoet's Quill 1 Professor of SymbologyProfessor of Symbology 1 Retriever PhoenixRetriever Phoenix 1 Rise of ExtusRise of Extus 1 Sparring RegimenSparring Regimen 1 Study BreakStudy Break 1 WishWish In-Deck Lessons (6) 1 Aang's JourneyAang's Journey 1 Azula Always LiesAzula Always Lies 1 Combustion TechniqueCombustion Technique 1 EnergybendingEnergybending 1 Mascot ExhibitionMascot Exhibition 1 Solstice RevelationsSolstice Revelations Sideboard (12) 1 Airbender's ReversalAirbender's Reversal 1 Airbending LessonAirbending Lesson 1 Confront the PastConfront the Past 1 Enter the Avatar StateEnter the Avatar State 1 Illuminate HistoryIlluminate History 1 Introduction to AnnihilationIntroduction to Annihilation 1 Iroh's DemonstrationIroh's Demonstration 1 Overwhelming VictoryOverwhelming Victory 1 Price of FreedomPrice of Freedom 1 Reckless BlazeReckless Blaze 1 Redirect LightningRedirect Lightning 1 Zuko's ExileZuko's Exile The Strixhaven learn effects are more based in Mardu than any other color combination, with the major issue being that the Lessons in Avatar aren't

Its popularity as a Super Rare feels inevitablethe refined detailing and regal presence make it a standout homage to the iconic character
Sphinx Summoner Sphinx Summoner is just simple, clean value
Its the thing that sparked my undying love for medieval-style fantasy, and what better entry point than one of the best examples of it
Either your card advantage will help you win the game before Phyrexian Arena squeezes the last points out of your life total, or you can offset this life loss by playing cards that gain life