Tekuthal, Inquiry Dominus Combos
Agatha's Soul Cauldron + Myojin of Towering Might + Tekuthal, Inquiry Dominus
Combo result
Infinite colored mana that can only be spent to activate abilities of creatures you control. Infinite colorless mana. Infinite +1/+1 counters.
Prerequisites
Myojin of Towering Might exiled by Agatha's Soul Cauldron. All other permanents on the battlefield. Tekuthal has at least one indestructible counter on it, and at least one +1/+1 counter on it.
Go-Shintai of Life's Origin + There and Back Again + Tekuthal, Inquiry Dominus
Combo result
Infinite Treasure tokens. Infinite colored mana. Infinite ETB. Infinite LTB. Infinite death triggers. Infinite proliferate. Put all Mountains from your library onto the battlefield.
Prerequisites
All permanents on the battlefield. Go-Shintai and Plaguemaw Beast do not have summoning sickness. There and Back Again has exactly two lore counters on it.
Tekuthal, Inquiry Dominus + Ichormoon Gauntlet + Jace, Cunning Castaway
Tekuthal, Inquiry Dominus + Karn, the Great Creator + Ugin's Nexus
Tekuthal, Inquiry Dominus + Magistrate's Scepter + Contagion Engine
Tekuthal, Inquiry Dominus + Magistrate's Scepter + Lithoform Engine
Tekuthal, Inquiry Dominus + Viral Drake + Cryptic Trilobite
Combo result
Infinite colored mana. Infinite colorless mana that can only be spent to activate abilities. Infinite +1/+1 counters on Cryptic Trilboite and Crystalline Crawler. Infinite proliferate.
Prerequisites
All permanents on the battlefield. Cryptic Trilobite and Crystalline Crawler each have at least one +1/+1 counter on it. {U} available.