How do you catch mesprit?

Question

what i meant by that is how do you not make it run. whats the easy way to catch it

Answer 1

First get a fast Pokemon that knows a paralyzing move like Thunder Wave.  Encounter Mesprit in the wild and use Thunder Wave to Paralyze it.  When it runs, it will retain the Paralysis state (and any damage it received).  

Then, when you enc outer it the next time, use a Pokemon with a move like Mean Look to stop it from running.  I personally like Crobat because he is also really fast so I don't have to worry about speed being an issue. Damage it down to low and start throwing the Ultra balls.  If it's night time, you can use Dusk Balls because they have a 4x capture rate at night.  Also, once the battle has gone about 30 turns, Timer Balls will have a 4x catch rate.  You can also use Wobbuffets Shadow Tag to stop it from running, but then you have to be careful with the mirror coats.

Answer 2

use mean look or block so it stays in battle and just do the regular battle it and throw pokeballs

Answer 3

If you don't have a Master Ball...

What they said. :]