Is this an invincible pokemon?

Question

Since a shedinja always only has 1 hp making it hold a focus band would make it invincible, right?

Answer 1

Focus Band only works about 1/5 of the time.

and Focus Sash is a 1 time use, so that won't work either.

Answer 2

Shedinja is weak to :Ghost, fire and dark moves... Any of those moves plus or minus that focus band will make a shedinja sandwich.  

Answer 3

No when its 1 HP and u attack again than it faints.

plz select as best answer.