Haste

Haste affects allied creatures that are within spell area of effect when spell is casted. All creature under influence of this spell:
 * double their movement rate
 * gain -2 bonus to initiative
 * receive extra attack each round

After spell ends all creatures that were under its influence are fatigued. Haste negates affects of Slow spell. Effects of haste don't stack with effects of other such spells like for example Improved Haste.