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
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.
Flying At the beginning of your upkeep, if a player controls more Wizards than each other player, the player who controls the most Wizards gains control of Thoughtbound Primoc.
Efforts to use them as spies failed when they kept reporting to the enemy.