Nature's Chosen is a uncommon Enchantment — Aura card from Alliances (ALL), collector number 97. Current market price: $2.69, TCGplayer market prices via Scryfall.
Enchant creature you control {0}: Untap enchanted creature. Activate only during your turn and only once each turn. Tap enchanted creature: Untap target artifact, creature, or land. Activate only if enchanted creature is white and untapped and only once each turn.