Thunder Bolt
From Pixelmon Wiki
Thunder Bolt (also known as Lightning) is an external move that causes lightning to strike at the block the player is looking at. A Pokémon must know at least one of the following Electric-type moves to use Thunder Bolt:
Thunder Bolt does not require rain to be activated, but it must be possible for there to be rain in the biome that the player is in; Thunder Bolt will not work in biomes that cannot have rain, such as in areas with no precipitation or areas with snow.
Thunder Bolt has a variable cooldown depending on the Pokémon's Speed stat, ranging from 24.8-4.2 seconds depending on the formula, 25-Speed.