Tekuthal, Inquiry Dominus (Oil Slick Raised Foil) [Phyrexia: All Will Be One] HER046 When you discard a card

When you discard a card with 6 or more [Power] during your action phase

"Presented to the Chief Artificer in recognition of his unparalleled service to Yoria

neither player can offer any monster as a Tribute

therefore you aren't

if a card has been put into your hero's soul this turn

Tekuthal, Inquiry Dominus (Oil Slick Raised Foil) [Phyrexia: All Will Be One] HER046 When you discard a cardSet: Phyrexia: All Will Be One Type: Legendary Creature Phyrexian Horror Rarity: Mythic Cost: {2}{U}{U} Flying If you would proliferate, proliferate twice instead. {1}{U P}{U P}, Remove three counters from among other artifacts, creatures, and planeswalkers you control: Put an indestructible counter on Tekuthal, Inquiry Dominus. ({U P} can be paid with either {U} or 2 life.)