It's not a nerf. They just removed a literally unusable effect, likely so people didn't complain to Konami about the effect "not working" when it isn't supposed to. The card wouldn't be functionally different if that text was still there.
Yes, although it didint state main phase 2, it is impossible to activate its effect in main phase 1 since no monster's have attacked by then
And to add, it is not quick effect, thus cannot be activated during battle phase either.
Anonymous
Daddy Gameciel
