Weariness would probably be the most obvious choice. The logic behind this is that your player has used up considerable energy when they were in their ad-rush. But either way, it all comes down to the game that your making i suppose. Personally i''d like to see the movement rate droped, or i should say "I think it would be a neat effect". I can''t see much more exploration of this topic now unless it can be merged with another topic?
