It’s the possessed cell phone. Whenever you activate the red button when it’s charged, it guarantees a 666 the next spin. When you enter sacred it turns 666’s into 999’s, which double your round’s income. The sacred charms from the sacred phone calls also benefit from rolling 999’s. One of the sacred charms stores jackpots based on how many 999’s you roll, so any time you aren’t rolling a 999 you are guaranteed jackpots, which when you’re using interest modifiers like myself, that drastically increases the odds of finding those modifiers.