However, I think it is valid that this has legal functional limits if considered (like you can set level -1e+308 to 1e+308 in the teambuild, or infinite level with level 1e+309 or above, but only level 1-9999 works on custom game to avoid damage to the website). Put limits on the tool, but allow it to happen. This can be seriously used to hold tournaments or even events with boss battles. (having some Pokémon at the desired maximum level but with extremely high hp to withstand multiple hits).