You start at 0, then through play you accumulate lore bit by bit
Normally, Universes Beyond cards are reprinted with more MTG-appropriate art and names at a later date under the Universes Within imprint
TCGPlayer is currently your best bet since you can look at a ton of card stores
Red is the color of fury, chaos, and passion
Just running this blind seems weak, it is poor as a threat and also poor removal against too much
Like most Magic: The Gathering cards, the value of Notion Thief depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Zendikar Rising Commander)