Cards have been found with the wrong games back, a foil layer on the back instead of the front, or with foreign objects like tape or even insects pressed into the card during manufacturing
It goes on the stack as an Adventure spell and can be responded to or even countered as normal
That all changed today, however, as Wizards of the Coast announced the Their Magic Is Limitless drop
0.444 per cent chance: 0.222 per cent per card (5th card probability rate, regular pack) Rainbow Full Art Zapdos EX, Rainbow Full Art Wigglytuff EX (Pikachu Pack) 0.1 per cent chance: 0.05 per cent per card (4th card, regular pack)
Storm the Festival was in many ways the weakest card in that list
Imprisoned in the Moon, Leyline of Anticipation, Shark Typhoon, and Teferi's Ageless Insight are all more than playable and would work well