When another spell is cast, Norin will flicker out and return to your control, allowing you to repeat his chaotic shenanigans all over again.
If you're going to use it anyway, you want to take advantage of the fact that this card also involves your own monsters
Jonathan Holloway, founder of Pokmon card authentication and pre-grading company Validoe, told USA TODAY that fake cards are abundant in the market, so the authenticity of the cards should be ensured before grading, which often comes at a price
Someone like @krystalkollectz might have further info, if needed
During your opponent's turn (Quick Effect): You can target 1 "Therion" card in your Spell & Trap Zone and 1 card your opponent controls
It enters the battlefield with haste, but you need an outside artifact to get it started