Name:Wave of Reckoning
ManaCost:4 W
Types:Sorcery
#for this AF, the DefinedCards$ Self is the target for Each damaging. They EachDamage themselves.
A:SP$ EachDamage | Cost$ 4 W | ValidCards$ Creature | NumDmg$ X | References$ X | DamageDesc$ damage equal to its power | DefinedCards$ Self | SpellDescription$ Each creature deals damage to itself equal to its power.
#NumDmg isn't really used here. It is left for clarity. The AF pulls Damage straight from "X" hardcoded.
SVar:X:Count$CardPower
SVar:RemAIDeck:True
SVar:RemRandomDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/wave_of_reckoning.jpg
Oracle:Each creature deals damage to itself equal to its power.