Before receiving errata, Ball Lightning only had to be sacrificed at the beginning of the end step of the turn it enters the battlefield instead of at the end step of any turn, allowing some loopholes around its intended impermanence before errata was issued to fix it
Its eaten a ban or two over the years, and itd take quite a bit to get those reversed
Tomorrow's Pokemon Card: So thanks for reading today's Pokemon card review of Darmanitan from the Emerging Powers set, stay tuned for tomorrow's card review of Simipour from the Emerging Powers set.
It's not a glitch, though, it's just worded strangely
A 3/2 flyer that effectively couldn't be blocked was pretty much a bomb, since there were few removal spells, fewer fliers, and virtually no tempo in this format