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
- Elemental Focus (Shaman talent) used to be a clearcasting effect and still has a similar mechanic
- Lock and Load (Hunter talent) allows you to use two Explosive Shots or Arcane Shots without Cooldown.
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.