Lier, Disciple of the Drowned is a rare Legendary Creature — Human Wizard card from Store Championships (SCH), collector number 20. Current market price: — (foil $39.62), TCGplayer market prices via Scryfall.
Spells can't be countered. Each instant and sorcery card in your graveyard has flashback. The flashback cost is equal to that card's mana cost.