I swear I tried to figure this one out, but I came to the conclusion that even if there were some convoluted way of pulling Fang out of our deck like a rabbit out of a hat, it would take up way too much deck space anyways
Really I just see this as a combo piece and so it is somewhat narrow, it is not even that powerful compared to many of the possible targets, and certainly not for its mana cost, it is just so highly convenient for combo
One of Magic's best control cards, Teferis functionally a 3-mana walker, since it refunds 2 of your mana if youre able to resolve it and +1 right away

." Aang's Iceberg Aang, the Last Airbender Abdel Adrian, Gorion's Ward Abstruse Appropriation Admonition Angel Aerial Extortionist Airbending Lesson Ajani Unyielding Alberix, the Trade Planet (playtest) Alter Reality Aminatou, the Fateshifter Amy's Home Ancestral Knowledge Angel of Indemnity Angel of Sanctions Angelic Purge Anguished Unmaking Annie Flash, the Veteran Anticausal Vestige Appa, Loyal Sky Bison Archon of Justice Argent Dais Arvinox, the Mind Flail Ashen Rider Ashiok, Nightmare Muse Auspicious Starrix Avatar Yangchen Ayli, Eternal Pilgrim Bahamut, Warden of Light Banish to Another Universe Banishing Light Banishment Battle Mammoth Battle at the Helvault Bazaar of Wonders Bigger on the Inside Bitter Ordeal Blizzard Strix Borrowed Time Bouncer's Beatdown Brainstealer Dragon Brittle Blast Bronze Tablet Bronzebeak Foragers Brutal Expulsion Buried in the Garden Buy Your Silence Bygone Marvels Calim, Djinn Emperor Canoptek Tomb Sentinel Cast Out Celestial Gatekeeper Celestial Purge Cemetery Desecrator Chains of Custody Chandra, Awakened Inferno Chaos Is My Plaything Chaotic Transformation Codie, Vociferous Codex Commandeer Commander Sofia Daguerre Commit // Memory Commit // Memory Conclave Tribunal Consign // Oblivion Consign // Oblivion Constable of the Realm Constrictor Sage Cosmic Intervention Council's Judgment Creeping Renaissance

You get great combat keywords in vigilance and first strike, an extra combat phase, and an additional main phase