Well, get a lot of ultra and timer balls. Bring a Pokemon who can paralyze or put him to sleep
Use a dusk ball instead during the nighttime.
get him down to low healt then use an ultra ball
you cant, you will need a master ball. I wasted mine catching Dialga yes u can use a heal ball i did it b4 im proved by pkmn master
Master ball
i used my master ball
No cuz there is dusk ball too.
Before you find Dialga in Diamond or Palkia in Pearl or giratina in platinum, Cyrus will give you a master ball. I'm assuming this is so you can catch Palkia, Dialga, or Giratina.
No, giratina is located in a cave... so i would use dark balls :)
Using dusk balls at night tend to work the best. But if you get it to sleep, an ultra ball can work too.
giratina
go to rooms and have a master ball with u
u go 2 d spear pillar and capture giratina