As with any malevolent being, the trick is knowing how long you can afford to keep it in your service. Liliana Vess Illustrated by Eytan Zana Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Not Legal Brawl Legal Legacy Legal Comp
Its joined by Vector from VI, Treno from IX, Windurst from XI and Insomnia from XV
Mulldrifter sees a lot less play in control decks than Think Twice but still makes appearances in them while getting most of its play from mid range decks
Vivi also combos with Quicksilver Elemental to create infinite mana and can even win the game if you have a way to cast infinite spells to ping down opponents
Though the "Precious" 1:1 serialized The One Ring has been found, the adventure with The Lord of the Rings: Tales of Middle-earth continues
Yes, creatures are (briefly) spells too in fact, the only cards which are never spells are Lands, since those are played straight from hand to battlefield without touching the stack