Thought-Knot Seer [Oath of the Gatewatch Prerelease Promos] Human Shaman puts it on the bottom

puts it on the bottom of their library

Set: Alpha Edition Type: Instant Rarity: Common Cost: {R} Cast this spell only during the declare blockers step

Other creatures you control get +2/+2

Set: Kaladesh Prerelease Promos Type: Artifact Creature — Construct Rarity: Rare Cost: {11} This spell costs {X} less to cast

" —Simic research notes

Thought-Knot Seer [Oath of the Gatewatch Prerelease Promos] Human Shaman puts it on the bottomSet: Oath of the Gatewatch Prerelease Promos 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.