Orb of Electricity
Obsolete: This article refers to an aspect of the game which has been removed. It is retained for historical reference only.
Orb of Electrocution was a level 7 Conjurations/Air Magic spell which hurled a crackling orb of electricity that would explode with immense force on impact.
Although it no longer exists in the game in spell form, it can still be cast by drawing the Spark card in the deck of destruction at power level 2 (legendary deck) or through Makhleb's Greater Destruction ability.
History
Orb of Electrocution was replaced with Chain Lightning way back in 0.1.