Orvar, the All-Form turns cheap cantrips and single-target instants into a token-copying engine, generating copies of your most powerful permanents every time you cast a spell that targets something you control. The deck floods the board with duplicates of key creatures and artifacts while recurring spells from the graveyard through flashback-style creatures to keep the engine churning. It wins through infinite loops enabled by Ghostly Flicker with Mindsplice Apparatus and a recursion creature, or by bouncing all permanents repeatedly with Tidespout Tyrant or Hullbreaker Horror alongside a self-bouncing mana rock.

Orvar, the All-Form decklist

• Mirrorhall Mimic // Ghastly Mimicry
• Mulldrifter
• Unsubstantiate
• Diluvian Primordial
• Vesuvan Duplimancy
• Sol Ring
• Thermal Flux
• Sapphire Medallion
• Mindsplice Apparatus
• Teferi's Ageless Insight
• Reliquary Tower
• Temple of the False God
• Counterspell
• Stunt Double
• Spark Double
• Dive Down
• Cerulean Wisps
• Essence Flux
• Enervate
• Arcane Denial
• Pongify
• Mizzium Skin
• Slip Out the Back
• Geistwave
• Rapid Hybridization
• Quantum Misalignment
• Irenicus's Vile Duplication
• Mirror Box
• Aetherize
• Phyrexian Metamorph
• Thought Vessel
• Snap
• Archaeomancer
• Archmage of Runes
• Clever Impersonator
• Elixir of Immortality
• Splash Portal
• 27× Island
• Twiddle
• Teferi's Time Twist
• Dream's Grip
• Ghostly Flicker
• Hidden Strings
• Boomerang
• Scorched Ruins
• Shipwreck Dowser
• Salvager of Secrets
• Mnemonic Wall
• Planar Incision
• Blur
• Repeal
• Artisan of Forms
• Reality Spasm
• Wavebreak Hippocamp
• Scourge of Fleets
• Hullbreaker Horror
• Archmage Emeritus
• Twitch
• Shadow Rift
• Twisted Image
• Glimmerpost
• Cloudpost
• Fblthp, the Lost
• Shimmering Mirage
• Aquitect's Will
• Jin-Gitaxias, Progress Tyrant
• Decanter of Endless Water
• Agent of Treachery
• Aether Channeler
• Tidespout Tyrant
• Venser, Shaper Savant
• Jace's Sanctum
• Muddle the Mixture