Energy Substitution, Sonic

Energy Substitution, Sonic
Basic Mental Method [Metacast]
Prerequisites: Mental Rank 4
Casting Prerequisite: To gain the benefit of this Metacast ability you must be Rank 4 or higher in the philosophy relevant to the power you are casting.
Free Action
Cost: CT +2
Effect: Having trained extensively in the use of what you believe to be a potent element, you can exchange the energies of elemental powers with your preferred type. When you cast a spell that deals Caustic, Cold, Fire, or Lightning damage, you may deal Sonic damage instead. The power gains the Sonickeyword and loses the keyword for the original energy type.
Special: Only one Metacast ability may be used on a single casting of a power.