While possessing Jesse's body, she uses two Decks as well: She uses an "Advanced Crystal Beast" Deck, which she creates by tainting Jesse's true Deck, and another Sacred Beast Deck, varying from the Deck she used while possessing Marcel, as her new Deck included cards that could duplicate themselves and help her meet each condition for Summoning "Uria", "Hamon", and "Raviel" before fusing them to Summon "Armityle the Chaos Phantom" yet again. As a backup strategy in this Deck, she stalled for time until she could Summon "Yubel", and damage her opponent in combination with "Grinder Golem".
In her final Duel with Jaden, Yubel runs a Fiend/Plant Deck, focused on the Summoning of her own card and its upgraded forms, as well as monsters that are Summoned under her opponents' control so she can damage her opponent. As a backup strategy, she uses the effect of "Spell Chronicle", which lets her remove key cards in her Deck from, and later forces her opponent to add them to her hand.
The hidden agenda of this Deck is the Summoning of "Super Fusion God", a monster which has the ability to combine or annihilate the twelve dimensions. Its Summoning requires one monster of each Level, from 1 to 12, by using "Super Polymerization". The only way to achieve this is the use of "Chain Material", which lets the controller to access the field, hand, Deck, and Graveyard for Fusion Material Monsters.