Reborn Hero is a rare Creature — Human Soldier card from Torment (TOR), collector number 14. Current market price: $0.30 (foil $3.25), TCGplayer market prices via Scryfall.
Vigilance Threshold — As long as there are seven or more cards in your graveyard, this creature has "When this creature dies, you may pay {W}{W}. If you do, return this card to the battlefield under your control."