Buffs and Debuffs are temporary Stat increases that help or hinder units affected by them, respectively. Each Buff has a respective Debuff that does the same effect but negatively.

Speed

Damage

Attack

Magic Damage

Armour

Magic Armour

Buffs and Debuffs cancel each other if they belong to the same subtype. For example if an unit has Speed Up and an enemies inflicts Speed Down, it will now have no Debuff or Buff.