Epistolary Librarian is a rare Creature — Astartes Wizard card from Warhammer 40,000 Commander (40K), collector number 118. Current market price: $0.36, TCGplayer market prices via Scryfall.
Veil of Time — Whenever this creature attacks, you may cast a spell with mana value X or less from your hand without paying its mana cost, where X is the number of attacking creatures.