Knowing what to look for will help you identify whats special

Alisaie Leveilleur Alphinaud Leveilleur Amy Pond Bebop, Skull & Crossbones Blaring Captain Blaring Recruiter Blue, Loyal Raptor Brallin, Skyshark Rider Cazur, Ruthless Stalker Chakram Retriever Chakram Slinger Evie Frye Frodo, Adventurous Hobbit Gorm the Great Haldan, Avid Arcanist Impetuous Protege Jacob Frye Jenny Flint Kamber, the Plunderer Khorvath Brightflame Krav, the Unredeemed Laurine, the Diversion Ley Weaver Lore Weaver Madame Vastra Merry, Warden of Isengard Mothers Yamazaki (playtest) Nikara, Lair Scavenger Okaun, Eye of Chaos Owen Grady, Raptor Trainer Pako, Arcane Retriever Pippin, Warden of Isengard Pir, Imaginative Rascal Proud Mentor Regna, the Redeemer Rhoda, Geist Avenger Rocksteady, Mutant Marauder Rory Williams Rowan Kenrith Sam, Loyal Attendant Shabraz, the Skyshark Silvar, Devourer of the Free Soulblade Corrupter Soulblade Renewer Sylvia Brightspear Timin, Youthful Geist Toothy, Imaginary Friend Trynn, Champion of Freedom Ukkima, Stalking Shadow Virtus the Veiled Will Kenrith Yannik, Scavenging Sentinel Zndrsplt, Eye of Wisdom

Rather than be a combo deck housed in a midrange deck this is one housed in a control deck
Even one evasive or hexproof creature turns this into a real hassle for your opponents, to say nothing of double strike
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as an overload cost), add any cost increases, then apply any cost reductions
Did I miss an obvious but amazing combination