and that's how ghastly is born.

an explosive escape?

Cloyster used Shell break
-def -sp def +atk +sp atk +speed

A Cloyster Bomb

Cloyster used Explosion!

I always thought there was a weird unexplained connection between cloyster and ghastly.

Cast Off.
[CAST OFF], [CHANGE BEETLE]

WheeOui said:
Cast Off.
[CAST OFF], [CHANGE BEETLE]

Hyper Cast Off

[CHANGE HYPER BEETLE}

HYPER CLOCK UP!

Returns to past to learn some move it couldn't learn.

Cloyster doing Shell Smash (an actual move). Stop making things up, guys.

boxmon said:
and that's how ghastly is born.

So in other word's Gastly is actually an evolution.