Clearcasting is both a term used for effects which cause the next spell to be free of cost and more specifically the name of buffs which provide this effect.
- Buffs named Clearcasting
- Arcane Concentration's effect (Mage talent)
- Buffs providing a clearcasting effect
- Similar buffs
When Clearcasting activates casters usually use a more mana intensive spell next to fully exploit the benefit of the talent. Also, casting spells when a clearcasting effect is active doesn't reset the mana regen timer.