If the holos sheet looks similar, this may partially explain the high variance in the observed pull rates (a random run of 12 holos from the sheet is more likely to contain duplicates and thus impact the observed statistics more)
Decks with "Soul Exchange" * is adopted as a key card
+ Requires control of specific card + Rainbow Refraction (en) +, Rfraction de l'Arc-en-Ciel (fr) +, Regenbogen Lichtbrechung (de) +, Rifrazione Arcobaleno (it) +, (ko) +, Refrao Arco-ris (pt) +, Refraccin Arco Iris (es) + and (ja) + Rmaji (b Za Reinb (ja)) + and Translation from Japanese (Over the Rainbow (en)) + Se um ou mais monstros que voc controla c Se um ou mais monstros que voc controla cujos nomes originais sejam "Drago Arco-ris" ou "Drago Negro Arco-ris" ativaram seus efeitos neste turno: Invoque por Invocao-Especial qualquer nmero de monstros "Fera Cristalina" com nomes diferentes do seu Deck.stalina" com nomes diferentes do seu Deck
The second thing worth pointing out that isn't immediately obvious is the 'number of Spell Cards chained before its summon -1'
While being a sorcery does weaken it a bit, it's a big upgrade to other cards with similar effects, and especially strong in Final Fantasy Limited formats
If heads, this attack does 50 damage plus 20 more damage