I love using
Seventh Sanctum to come up with ideas for arenas.
1vs1 single
Style: Set
DQ: Standard week
Damage cap: 60%
Banned moves: OHKO's; each Pokemon limited to one direct-healing move
Arena: Witches' Province
A magical corner of the world, inhabited primarily by witches and warlocks. The arena itself is in the center of a typical forest, with your standard-issue witch's cottage just on the arena's outskirts. Puffs of multicolored smoke have a habit of escaping the cottage's chimney, and can cause hallucinogenic effects on Pokemon that inhale them (which will be primarily or solely Flyers, since the smoke isn't heavier than air). This causes them to be moderately Confused but have random stat boosts to any combination of Attack, Defense, Sp. Atk, Sp. Def, Speed, and Accuracy which are cumulatively equal to +6.
The arena itself, being so infused by magic, has some odd effects on Pokemon battling within it. At the end of each round, one of the following effects will occur:
18% chance that one Pokemon will receive a +2 boost to one stat (either Attack, Defense, Sp. Atk, Sp. Def, Speed, and Accuracy) (3% each stat)
18% chance that one Pokemon will receive a -2 penalty to one stat (3% each stat)
12% chance that both Pokemon will receive a +1 boost to one stat (2% each stat)
12% chance that both Pokemon will receive a -1 penalty to one stat (2% each stat)
5% chance that one Pokemon will be given the effects of Magic Coat
5% chance that one Pokemon will receive Magic Guard in addition to its normal ability (this lasts for one round)
5% chance that Magic Room will go into effect (this is a Trick Room-like Gen V effect that removes all effects of items)
5% chance that one Pokemon will receive Magic Mirror in addition to its normal ability (all stat-lowering moves are reflected back to the user) (this lasts for one round)
5% chance that both Pokemon will recover 40% Health
5% chance that both Pokemon will recover 40% Energy
10% chance that nothing will happen
Profile
I hope nobody minds that I put Gen V stuff in here for arena effects.