Not to mention that you can always just cast it in the second main phase for a reduced cost if it dies in combat this turn
In each case, the non-foil version is $29.99 and the foil option is $39.99
Lets say you got an attack off with Celestine and you cast a Chaplain's Blessing (not something Id ever recommend doing, but just for the sake of this example)
3 Chaos, the Endless Circle of Power Cloud of Darkness Dark Knight's Greatsword Demon Wall Evil Reawakened Exdeath, Void Warlock Fang, Fearless l'Cie Gaius van Baelsar Garland, Knight of Cornelia Judge Magister Gabranth Locke Cole Neo Exdeath, Dimension's End Overkill Phantom Train Poison the Waters Ragnarok, Divine Deliverance Reno and Rude Rufus Shinra Shambling Cie'th Sidequest: Hunt the Mark Summon: Anima The Final Days Tonberry Ultimecia, Omnipotent Ultimecia, Time Sorceress Yiazmat, Ultimate Mark
Colorless: Skullclamp, Ichor Wellspring, Mishras Bauble, Mask of Memory, etc
This creates a damage loop, and because you take no damage, all opponents will die, thus ceasing the loop because you won