Mesmeric Sliver [Future Sight] 170 You may cast a spell

You may cast a spell with mana value X or less from among cards revealed this way without paying its mana cost

what is that

but not her instinct to help humankind

Set: World Championships 2018 Type: Dragon Rarity: Ultra Rare Retreat cost: Colorless

as if summer still lingered in Elrond's gardens

Mesmeric Sliver [Future Sight] 170 You may cast a spellSet: Future Sight Type: Creature Sliver Rarity: Common Cost: {3}{U} All Slivers have "When this permanent enters the battlefield, you may fateseal 1." (To fateseal 1, its controller looks at the top card of an opponent's library, then they may put that card on the bottom of that library.)