Ian Malcolm, Chaotician is a rare Legendary Creature — Human Scientist card from Jurassic World Collection (REX), collector number 13. Current market price: $6.72 (foil $10.61), TCGplayer market prices via Scryfall.
Whenever a player draws their second card each turn, that player exiles the top card of their library. During each player's turn, that player may cast a spell from among the cards they don't own exiled with Ian Malcolm, and mana of any type can be spent to cast it.