Genju of the Fens is a uncommon Enchantment — Aura card from Duel Decks Anthology: Garruk vs. Liliana (GVL), collector number 47. Current market price: $0.21, TCGplayer market prices via Scryfall.
Enchant Swamp {2}: Until end of turn, enchanted Swamp becomes a 2/2 black Spirit creature with "{B}: This creature gets +1/+1 until end of turn." It's still a land. When enchanted Swamp is put into a graveyard, you may return this card from your graveyard to your hand.
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