Complex sentence: The Pixies' reign was short lived however, as when Timmy Turner beat the Head Pixie in a game of miniature golf he was allowed (as part of a bet) to make one wish unlimited by the new rules.
Split into simpler sentences: The Pixies' reign was short lived however, as when Timmy Turner beat the Head Pixie in a game of miniature golf. As part of a bet, Timmy was allowed to make one wish unlimited by the new rules.