"The dead perform all the work here—farming, building, teaching, even embalming their fellow mummies. The living need do nothing but train. What system could be more perfect?" —Temmet, vizier of Naktamun
{X}, {T}: Target opponent reveals cards from the top of their library until an artifact card or X cards are revealed, whichever comes first. If an artifact card is revealed this way, put it onto the battlefield under your control and sacrifice Thought Dissector. Put the rest of the revealed cards into that player's graveyard.
Trample When Thought Gorger enters, put a +1/+1 counter on it for each card in your hand. If you do, discard your hand. When Thought Gorger leaves the battlefield, draw a card for each +1/+1 counter on it.
Choose a nonland card name. Target player reveals their hand. Thought Hemorrhage deals 3 damage to that player for each card with the chosen name revealed this way. Search that player's graveyard, hand, and library for all cards with that name and exile them. Then that player shuffles.
Cumulative upkeep—Exile the top card of your library. When a player doesn't pay Thought Lash's cumulative upkeep, that player exiles all cards from their library. Exile the top card of your library: Prevent the next 1 damage that would be dealt to you this turn.
Imprint — When Thought Prison enters, you may have target player reveal their hand. If you do, choose a nonland card from it and exile that card. Whenever a player casts a spell that shares a color or mana value with the exiled card, Thought Prison deals 2 damage to that player.
"As you inject the viscus vitae into the brain stem, don't let the spastic moaning bother you. It will soon become music to your ears." —Stitcher Geralf
Flash Thought Sponge enters with a number of +1/+1 counters on it equal to the greatest number of cards an opponent has drawn this turn. When Thought Sponge dies, draw cards equal to its power.
When Thought-Knot Seer enters, target opponent reveals their hand. You choose a nonland card from it and exile that card. When Thought-Knot Seer leaves the battlefield, target opponent draws a card.
Menace When Thought-Stalker Warlock enters, choose target opponent. If they lost life this turn, they reveal their hand, you choose a nonland card from it, and they discard that card. Otherwise, they discard a card.
"As the rest of the mortal world waged war, Lady Azami and her students invaded tomes of knowledge. Their search yielded spells critical in the fight." —Observations of the Kami War
Defender Whenever you surveil, put a +1/+1 counter on Thoughtbound Phantasm. As long as Thoughtbound Phantasm has three or more +1/+1 counters on it, it can attack as though it didn't have defender.