Thought-Knot Seer (1151) (Borderless) [Secret Lair Drop Series] Grass[+10] Its owner puts it on

Its owner puts it on the top or bottom of their library

Set: Sun & Moon: Black Star Promos Type: Darkness Rarity: Promo Retreat cost: Colorless

where X is the total power of the creatures sacrificed this way

then we'll talk about lost sanity

Set: Skyridge Type: Fighting Rarity: Rare Retreat cost: Colorless

Thought-Knot Seer (1151) (Borderless) [Secret Lair Drop Series] Grass[+10] Its owner puts it onSet: Secret Lair Drop Series Type: Creature Eldrazi Rarity: Rare Cost: {3}{C} ({C} represents colorless mana.) When Thought Knot Seer enters the battlefield, 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. It thinks, therefore you aren't.