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 Foil - £5.40
Lightly Played Foil - £4.60
Moderately Played Foil - £3.80
Heavily Played Foil - £2.70
Damaged Foil - £1.70
Near Mint Foil Non English - £5.40
Lightly Played Foil Non English - £4.60
Moderately Played Foil Non English - £3.80
Heavily Played Foil Non English - £2.70
Damaged Foil Non English - £1.70