Whenever you gain life, target opponent loses that much life. When Enduring Tenacity dies, if it was a creature, return it to the battlefield under its owner's control. It's an enchantment. (It's not a creature.)
Near Mint - $4.70
Lightly Played - $4.30
Played - $3.30
Heavily Played - $2.90
Damaged - $2.40
Near Mint Non-English - $4.70
Lightly Played Non-English - $4.30
Played Non-English - $3.30
Heavily Played Non-English - $2.90
Damaged Non-English - $2.40
Foil Prices
Near Mint Foil - $5.30
Lightly Played Foil - $4.70
Played Foil - $3.70
Heavily Played Foil - $3.20
Damaged Foil - $2.70
Near Mint Foil Non-English - $5.30
Lightly Played Foil Non-English - $4.70
Played Foil Non-English - $3.70
Heavily Played Foil Non-English - $3.20
Damaged Foil Non-English - $2.70