Masterball

The Masterball is a type of pokeball. It will always catch a wild Pokémon after defeating it if is the highest type of pokeball active and there is a remaining supply in the pokeball selector.

Description
The Ultimate pokeball to capture Pokémon with. It has a 100% catch rate. Each time it is purchased it becomes 35% more expensive; increases to the price cap at 100 times the base price