Try this:
And then some code (untested):
val pokemonNames = listOf(
"Arktos",
"Mewtu",
"Lugia"
)
registerCommand("giverandomlegendary") {
action(onlyPlayers = true) {
val randomPoke = pokemonNames.randomElement
val command = "pokegive ${player.name} $randomPoke"
Server.console.executeCommand(command)
}
}