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 - $7.00
Lightly Played - $6.30
Played - $4.90
Heavily Played - $4.20
Damaged - $3.50
Near Mint Non-English - $7.00
Lightly Played Non-English - $6.30
Played Non-English - $4.90
Heavily Played Non-English - $4.20
Damaged Non-English - $3.50
Foil Prices
Near Mint Foil - $8.00
Lightly Played Foil - $7.20
Played Foil - $5.60
Heavily Played Foil - $4.80
Damaged Foil - $4.00
Near Mint Foil Non-English - $8.00
Lightly Played Foil Non-English - $7.20
Played Foil Non-English - $5.60
Heavily Played Foil Non-English - $4.80
Damaged Foil Non-English - $4.00