Sage of the Maze is a rare Creature — Elf Wizard card from Modern Horizons 3 Commander (M3C), collector number 67. Current market price: $0.60, TCGplayer market prices via Scryfall.
{T}: Add two mana in any combination of colors. {T}: Until end of turn, target land you control becomes an X/X Citizen creature with haste in addition to its other types, where X is twice the number of Gates you control. Activate only as a sorcery. Tap an untapped Gate you control: Untap this creature.