Counterspelling

By readying an action specifically to counterspell a specific target, you may counter an opponent's spell as he casts it. You must meet the following requirements:

• You must cast the exact same spell as the caster.
  • It requires readying an action of the type needed to cast the spell.
  • You must be able to see and hear the caster to know when he is casting a spell, and what that spell is. For each sense you are missing, or for each component (verbal or somatic) subject does not use, you suffer a 50% failure chance to the attempt.
  • If the spell is on cooldown, you cannot counterspell with it.
  • If you counterspell with a cooldown spell, you put the spell on cooldown.
• The caster or his target must be within range of the spell you are using to counterspell.

If successful, the opponent's spell is negated entirely. The spell you cast has no effect other that to counter the opponent's spell.