Double team is banned because it makes the game based more on luck than skill.
Moves like agility, swords dance, and dragon dance do not impact luck at all, and have both strengths and tradeoffs. Their use is a tactical decision.
>>27580937There are only two pokemon that can use Geomancy -- Xerneas and Smeargle. Smeargle can't really use it any more effectively than any other move it gets (it needs power herb, which forces it to give up a focus sash, making it insanely easy to take out), and Xerneas is banned to ubers.
>>27581008Too many moves cause paralysis or confusion as a side effect for them to be banned. Attract is extremely limited in usability.
