Guile + Dovescape = They can only play creatures or they give you birds.
Realm Razer + Angel of Condemnation = Land Hate
Brudiclad, Telchor Engineer + Transmogrifying Licid + Skullclamp/Hypnotic Siren = Weird Creature Equip
Midnight Guard + Pressence of Gond = Infinite Tokens
Vampire Hexmage  + Greater Gargadon or any powerful suspend card = Instant un-suspend
Fynn, the Fangbearer + Bow of Nylea + Saryth, the Viper's Fang = easy poison counters
Mephidross Vampire + Triskelion = endless damage
Strict Proctor + Lotus Field = white ramp
Prototype Portal + any artifact land = ramp
Swift Reconfiguration + Devoted Druid = infinite mana
Mirror of Life Trapping + Containment Priest = Exile all new creatures
Phyrexian Unlife + Solemnity = immortality
Dryad of the El Grove + domain (Jodah's Codex, Nael, Prismatic Geoscope) = easy bonus draw or discount
Bola's Citadel + Wolverine Riders/Verdant Sun's Avatar = Constant free creatures
Ghyrson Starn + Manabarbs = Everyone takes 3 damage tapping a land
Exchange of Words + Sippery Bogle/Invisible Stalker + Death's Shadow = Giant hard to remove creature
Yavimaya, Cradle of Growth + Lifetap = every land tap in game grants you life
Dark Depths + Thespian's Stage = instant indestructible 20/20
Etrata, the Silencer + Mari, the Killing Quill = hit counter player killer combo
Smuggler's Share + Rites of Flourishing/Storm Cauldron/Dictate of Kruphix/Ghirapur Orrery = Free cards and treasure tokens
Triskaidekaphobia + Tree of Perdition = Slow combo win
Dovescape + Akim, the Soaring Wind + Enduring Ideal = Generated Token Driven deck
Claire D'Loon + Battle of Wits = Make a ton of token permanents to win
Knowledge Pool + Teferi, Mage of Zhalfir = Opponents can't cast spells
Ivy, Gleeful Spellthief + Vesuvan Duplimancy
Orcish Bowmasters + Flumph + protection = infinite orcs
Asmoranomardicadaistinaculdacar + Brash Taunter + City on Fire = 54 damage
Experimental Confectioner + Peregrin Took = Infinite Rats