Article: Regice is a level 40 Pokemon, but it is recommended that your party be at least level 50 in order to stand a chance. A common strategy to weaken Regice without knocking it out is to use a Pokémon with the False Swipes move. This lowers the enemy's health without knocking it out. Another common strategy is to try to put the opponent to Sleep or to Paralyze it. This will increase your chances of capturing the Pokemon. Ultra Balls will give you the best chance to catch Regice. Depending on Regice's health and status effects, you may need quite a few Ultra Balls. The Island Cave on the western side of the route will be open now. Head into this cave. The Braille inscription asks you to wait "twice", which means you need to sit and not move for two minutes. Set your game down for a few minutes so that you don't accidentally move your character. If you do move, exit the cave and try again. After two minutes, a door will open. You'll only have one chance to fight Regice, so make sure you save before fighting. This will allow you to reload your game if you accidentally knock out Regice before capturing it, or if it wipes your party out. Walk up to Regice and begin the fight. Whittle down its health and then try to put it to Sleep or Paralyze it. Once Regice is in the red and is asleep or frozen, start throwing Ultra Balls at it. If you want to be able to capture Regigigas, you'll need to give Regice a nickname. You can do this as soon as you capture it, or you can take Regice to a Name Rater to give it a new name. The Name Rater can be found to the south of the Contest Hall in Slateport City.

What is a summary?
Prepare your party. Stock up on Ultra Balls. Head to Route 105. Read the inscription and then wait. Save your game. Capture Regice. Give it a nickname (Alpha Sapphire and Omega Ruby).