Yeah i do suspect it must have been a bad clone with the eggs, bad timing or something but as for celebi i am still confused with that because i soft reset for it to be shiny so it definitely hasn't been tampered with in any way.
251 ★ - CELEBI - D3D4.pk2
172 ★ - EGG - 5B56.pk2
173 ★ - EGG - 3F15.pk2
174 ★ - EGG - 5C14.pk2