The Tower of Heaven is an ancient structure that stretches deep into the clouds, the heavens, and far beyond. It is composed of a material similar to rock, but far more durable and nearly impossible to break. Most of the structure is open-air giving a good glimpse of the clear sky. Moss and other small plant life have grown on the outcropping on the rock-like material with small butterflies flying about. There are small streams and pools of water within the structure for Water attacks and Water Pokemon. The battle will take place within one of the many chambers of the tower.
All moves can be used within the Tower of Heaven. However, there is a catch. Within my hands is the Book of Laws. At the end of each round, I'll write down a new law. The laws restrict what attacks, actions, or commands you may or may not take in battle. Violation of any law in battle will still allow you to perform the command, however the offender will be struck down with a lightning bolt that deals 10 damage flat and ignores abilities, weakness, and resistance. The lightning bolt cannot be deflected, dodged, evaded, or otherwise blocked. It will hit the Pokemon behind a Substitute, find its way through Double Team, and will go through Wonder Guard. Pokemon that are immune to Electric attacks by ability or typing will still be struck down and will gain no benefit such as Motor Drive's Speed boost. Violation of multiple laws in an action will drop down multiple lightning bolts on the offender depending on how many laws they've broken in a given action.
For instance, Pikachu decides to use Thunderbolt on a Staryu. If I restrict the usage of Thunderbolt, Pikachu will be smote once for 10 damage. If I restrict the usage of Thunderbolt and all Electrical attacks, Pikachu will be hit twice for 20 damage. Finally, if I restrict the usage of Thunderbolt, Electrical attacks, and super-effective moves, Pikachu will be struck thrice for 30 damage.
If there's any questions or need clarification on anything, PM me.
Summary: All moves can be used initially, however new laws added in each round will restrict what commands can be used. Violation of any law will be penalized with a lightning bolt dealing 10 damage flat ignoring typing and abilities. Combatants can be penalized multiple times in an action.
Teleportation Corollary: If this arena is picked randomly as a result of arena effect, then the ref is free to generate up to three rules for the combatants to follow until a new arena is chosen.