Bukkit

Suggestion

Example 1. There are two players in your pvp arena. Player 1 has donated to your server for fly permissions and he is abusing flight against the other player. If Player 1 hits Player 2, Player 1 will lose flight. If Player 2 hits Player 1, player 1 loses flight.

Example 2. There are two players in your pvp arena. Player 1 has donated to your server for creative permissions and he is abusing flight against the other player. If Player 1 hits Player 2, Player 1 will lose creative. If Player 2 hits Player 1, player 1 loses creative.