Will-o'-the-Wisp [Beta Edition] Khans of Tarkir Prerelease Promos cast it without paying its

cast it without paying its mana cost

Sacrifice a creature: Return target creature card from your graveyard to the battlefield

Set: Friday Night Magic 2005 Type: Instant Rarity: Rare Cost: {3}{U} Reveal the top five cards of your library

Set: Magic 2014 Type: Artifact Rarity: Mythic Cost: {9} Artifacts you control have indestructible

you may reveal a Goblin card from your hand

Will-o'-the-Wisp [Beta Edition] Khans of Tarkir Prerelease Promos cast it without paying itsSet: Beta Edition Type: Creature Spirit Rarity: Rare Cost: {B} Flying (This creature can't be blocked except by creatures with flying or reach.) {B}: Regenerate Will o' the Wisp. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.) "About, about in reel and rout The death fires danced at night; The water, like a witch's oils, Burnt green, and blue and white." Samuel