Asterald (Steel/Psychic)
(Asteroid+Herald)

Evolves from Jirachi randomly when travelling.

"Shooting Star Pokemon"
This mysterious Pokemon can travel at an incredible speed through space.When this happens,they release bright space debris.Because of this,they look like shooting stars.

Little is known about this creatures,at least on the science side.However,they appear in many books regarding Shinnoh legends.

According to these legends,Jirachi is not an unique Pokemon,but several of these little Pokemon exist in all the universe,and are Angels at the service of the almighty Arceus.
They'll evolve into an Asterald only when Arceus commands its time to.When this happens,they become the God's personal heralds,and must travel the whole galaxy and watch over every single planet,including Earth.

Some Asteralds are destined to become "Guardian angels" of a single Pokemon;to protect and watch over them their whole life;conforting them in their hardest moments too! all with Asterald amazing Psychic powers.Of course,the Pokemon will never realize its being protected.

Shinnoh habitants believe that if you made a wish to a shooting star and it became true,that "star" could have been an Asterald who read your mind and heard your plea

To the day,nobody has ever seen or captured an Asterald.
Without a single scientific proof of this Pokemon,or even the So called God Arceus,in Shinnoh,they insist in respecting and keeping their ancesters stories alive.