Your deck needs to use counters for this excellent proliferate card to work, but the free proliferate triggers do so much work in decks that care about it
Sounds like all your stuff aligns with my findings though The normal shadowless backs are +15 and the fronts are -15
$0.49 Torgal, A Fine Hound Final Fantasy $0.79 Jill, Shiva's Dominant Final Fantasy $1.99 Venat, Heart of Hydaelyn Final Fantasy $2.99 Aerith Gainsborough Final Fantasy $0.49 Vanille, Cheerful l'Cie Final Fantasy $0.49 Ashe, Princess of Dalmasca Final Fantasy $0.79 Firion, Wild Rose Warrior Final Fantasy $1.49 Vincent Valentine Final Fantasy $0.49 Vaan, Street Thief Final Fantasy $0.79 Jecht, Reluctant Guardian Final Fantasy $0.49 Sin, Spira's Punishment Final Fantasy $0.49 Zodiark, Umbral God Final Fantasy 0 results found
After that, start trying to get some token generators on the battlefield so you have fresh bodies each turn (or a ton all at once) that can be sacrifice fodder
OMINOUS HARVEST Lilianas Standard Bearer is a card I have a lot of time for
Learning curve (from easiest to most complex) What Is the Best TCG for Collecting