What does helping hand do in Pokemon Colosseum?

"Helping Hand" is not a move in Pokémon Colosseum. It is a move in later games, but its effect is quite simple: it increases the power of the next move used by an ally Pokémon by 50%.

However, in Pokémon Colosseum, you have access to a similar mechanic, albeit not through a specific move:

* "Double Team" and "Swagger" are two moves that can help increase the power of your next move. "Double Team" raises the user's evasion, which makes it harder for the opponent to land a hit, effectively increasing the chances of your next move landing. "Swagger" raises the opponent's Attack stat, which can then be used to your advantage if they attack themselves, essentially causing them to inflict damage on themselves.

In Pokémon Colosseum, these moves, alongside other strategies like status conditions and type matchups, are your tools to manipulate the battle and achieve victory.