Eel Umbra is a card from the Magic: The Gathering Commander 2018 set, classified as an Unknown rarity. Valued at $0.19, it offers players a cost-effective option for enhancing their creature strategies with its ability to grant a creature +3/+3 and provide an additional benefit through its flash ability. While not a staple in competitive play, its versatility makes it a noteworthy addition for casual and budget-focused decks.