Like in most Final Fantasy games, its not the final boss that gets you its one of the random ones along the way that becomes your nemesis and I embraced that role for the table
If Esper is the secret police, Jund is the cap-wearing Brooklyn fellows with crowbars
Typically, if I have access to it and it's not destroyed via Movepool (looking at you Gen 4), I will always have it on my team
(Those Prize cards remain face up for the rest of the game.) You may play as many Item cards as you like during your turn (before your attack)
Cases involving "Urgent Schedule" Alternatively, you can gather one-turn kill (OTK) pieces by involving "Urgent Schedule," which can be played directly from the hand on the condition that the opponent has a monster on the field, with: "Urgent Schedule" and "Express Knight" "Urgent Schedule" and "Derricrane" "Urgent Schedule" and "Bullet Liner" "Urgent Schedule" and "Flying Pegasus" "Urgent Schedule" and "Revolving Switchyard" "Urgent Schedule" and "Terraforming" In these cases, you can assemble the OTK pieces
Be forewarned that older codes may be for a sealed event, so if MTGA is not running that format anymore, you may not get anything