Experimental Elements

Choose two of the following damage types; fire, cold, thunder, lightning, acid or poison.

Any time you cast a spell that deals damage of the first damage type, instead deal damage of equal power using the second damage type.

Example: 1) Lightning, 2) Acid. Whenever Shocking Grasp is cast, instead of Lighting damage, this spell now deals Acid damage. The same goes for any other spell that deal Lightning damage. Although more Acid spells are now available, the character can no longer cast spells that deal Lightning damage.