Name:Prismatic Ward
ManaCost:1 W
Types:Enchantment Aura
K:Enchant creature
A:SP$ Attach | Cost$ 1 W | ValidTgts$ Creature | AILogic$ Pump
K:ETBReplacement:Other:ChooseColor
SVar:ChooseColor:DB$ ChooseColor | Defined$ You | AILogic$ MostProminentInHumanDeck | SpellDescription$ As CARDNAME enters the battlefield, choose a color.
R:Event$ DamageDone | ActiveZones$ Battlefield | Prevent$ True | ValidTarget$ Creature.EnchantedBy | ValidSource$ Card.ChosenColor | Description$ Prevent all damage that would be dealt to enchanted creature by sources of the chosen color.
SVar:Picture:http://www.wizards.com/global/images/magic/general/prismatic_ward.jpg
Oracle:Enchant creature\nAs Prismatic Ward enters the battlefield, choose a color.\nPrevent all damage that would be dealt to enchanted creature by sources of the chosen color.