What is amu last egg called in shugo chara?

Answer 1

That Amu will have a fifth egg is actually an unconfirmed rumor. It started with the finding of the Shugo Chara card game where there is a fifth card with a cross on it. That the egg in the game was her fifth, and not a negative one not hers in the game was started on Crunchyroll.com, or so I believe. It could have actually started sooner, but this is the earliest appearance of the cross egg.

There are many problems with the rumor. For example, Amu's egg follow a very decisive pattern... all of her eggs are the suits of playing cards, so the cross egg doesn't fit the pattern. Also, because no one really has much information about the eggs, no one can tell if the egg is actually hers in the game, or one that is actually a negative effect.

As for all the pictures that supposedly prove the existence of Amulet Cross, which supposedly proves that Amu has a fifth egg, there are problems with each one. The first two that were revealed were, the first from a card game, the second was actually fanart of what she would supposedly look like.

As for the second two, someone has actually claimed on the net that Amulet Devil is Amulet cross, while the last is an actual variant on Amulet Devil designed possibly because Amulet Devil is a bit... how to put it, not very modestly dressed, while the second version is more modest then the first and is used for cover art.

...

Also, in the latest manga, she does have a new form, but no fifth egg.