Name:Prism Ring
ManaCost:1
Types:Artifact
K:ETBReplacement:Other:ChooseColor
SVar:ChooseColor:DB$ ChooseColor | Defined$ You | SpellDescription$ As CARDNAME enters the battlefield, choose a color. | AILogic$ MostProminentInComputerDeck
T:Mode$ SpellCast | ValidCard$ Card.ChosenColor | ValidActivatingPlayer$ You | Execute$ TrigGainLife | TriggerZones$ Battlefield | TriggerDescription$ Whenever you cast a spell of the chosen color, you gain 1 life.
SVar:TrigGainLife:AB$ GainLife | Cost$ 0 | LifeAmount$ 1
SVar:Picture:http://www.wizards.com/global/images/magic/general/prism_ring.jpg
Oracle:As Prism Ring enters the battlefield, choose a color.\nWhenever you cast a spell of the chosen color, you gain 1 life.