Thought-Knot Seer [Oath of the Gatewatch] XY99 You can only use each

You can only use each effect of "Assault Sentinel" once per turn

if you control "Elemental HERO Terra Firma": This turn

Set: Starter Deck: Duelist Toolbox Card type: Normal Spell Rarity: Common Attack: 0 Defense: 0 Destroy the 1 face-up Attack Position monster that has the highest ATK

then turn Paliano Vanguard face down

Set: Dragons of Legend 2 Card type: Effect Monster Rarity: Secret Rare Attack: 2800 Defense: 1800 Cannot be Normal Summoned/Set

Thought-Knot Seer [Oath of the Gatewatch] XY99 You can only use eachSet: Oath of the Gatewatch 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.