Aloy, Savior of Meridian is a mythic Legendary Creature — Human Warrior card from Secret Lair Drop (SLD), collector number 2221. Current market price: $4.56, TCGplayer market prices via Scryfall.
Vigilance, reach In You, All Things Are Possible — Whenever one or more artifact creatures you control attack, discover X, where X is the greatest power among them. (Exile cards from the top of your library until you exile a nonland card with that mana value or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)