First printed in Urza's Destiny (1999)
Treachery 
Enchantment — Aura
Enchant creature
When this Aura enters, untap up to five lands.
You control enchanted creature.
In the last 30 days 0.0% of Commander decks played it (1 of 6150). Most played in Orvar, the All-Form.
Combos
35 combos from Commander Spellbook, the most popular first.
- Infinite artifact ETB, Gain control of all creatures…: Orvar, the All-Form + Treachery + Whim of Volrath
- Infinite artifact ETB, Gain control of all creatures…: Clockspinning + Orvar, the All-Form + Treachery
- Infinite creature ETB, Infinite creature LTB…: Elesh Norn, Mother of Machines + Treachery + Venser, Shaper Savant
- Infinite creature ETB, Infinite creature LTB…: Treachery + Venser, Shaper Savant + Yarok, the Desecrated
- Infinite lifegain, Infinite lifegain triggers…: Claws of Gix + Hakim, Loreweaver + Treachery
- Infinite mana lands you control can produce, Infinite blue mana…: Adagia, Windswept Bastion + Azorius Chancery + Treachery
- Infinite mana lands you control can produce, Infinite blue mana…: Adagia, Windswept Bastion + Treachery + Uthros, Titanic Godcore
- Infinite colored mana, Infinite mana lands you control can produce…: Adagia, Windswept Bastion + Lotus Field + Treachery
- Infinite mana lands you control can produce, Infinite blue mana…: Adagia, Windswept Bastion + Dimir Aqueduct + Treachery
- Infinite mana lands you control can produce, Infinite black mana…: Adagia, Windswept Bastion + Orzhov Basilica + Treachery
Legality
Constructed
- Standard Not legal
- Pioneer Not legal
- Modern Not legal
- Legacy Legal
- Vintage Legal
- Pauper Not legal
- Future Standard Not legal
- Historic Not legal
- Timeless Not legal
- Alchemy Not legal
- Penny Dreadful Not legal
- Premodern Legal
- Old School 93/94 Not legal
Singleton
- Gladiator Not legal
Commander formats
- Commander Legal
- Duel Commander Legal
- Pauper Commander Not legal
- PreDH Legal
- Tiny Leaders Not legal
- Oathbreaker Legal
- Brawl Not legal
- Standard Brawl Not legal
- Competitive Brawl Not legal