The best ball to catch Deoxys is a Master Ball or a Timer Ball! Trust Me!!! Pokemon Master
A master ball
Dusk balls
You should use a Master Ball or a ton of Ultra Balls and you might get lucky.
you catch it with a poke ball
A regular pokeball I'm not playing I caught entie with it jk the best one is a master ball but I did catch entie with a poke ball
master ball
with a poke ball
use a poke ball
by throwing it
To catch a pokemon, you require a Poke ball, which you can buy from a poke mart.
the ultra ball is what i used to catch it...but you could use the master ball after you get it
Catch him with the second master ball you get from the guy at the pokemon center at the top after you have traded 50 times