The Ho-Oh Capture Event:
1. Reach the upper left chamber: You need to progress through Ruins Alph until you reach the upper left chamber where Ho-Oh is located.
2. Ho-Oh will appear: Ho-Oh will appear before your party and you'll be prompted to catch it.
3. Catching Ho-Oh: You will be able to catch Ho-Oh, but it's a very difficult capture. It has a low catch rate and will likely run away.
Tips for Catching Ho-Oh:
* Level up your Pokemon: The higher the level of your Pokemon, the better chance you'll have of catching Ho-Oh. Aim for a level significantly higher than Ho-Oh's.
* Use status effects: Use moves like Sleep Powder, Freeze Dry, or Thunder Wave to reduce Ho-Oh's HP and make it easier to catch.
* Use Ultra Balls or Master Balls: Ultra Balls have a higher capture rate than Poke Balls. Master Balls will always catch a Pokemon.
* Be patient: It takes a lot of attempts to catch Ho-Oh, so don't give up. Keep trying and you'll eventually get it.
Important Note: You only get one chance to capture Ho-Oh. If you fail, it will fly away and you won't be able to encounter it again in the game.