If one or two of Cone of Flame’s targets are illegal when it resolves, you can’t change how much damage will be dealt to the remaining legal targets.
18-07-2014
wotc
Each of the three targets must be different. If there aren’t three different legal targets available, you can’t cast the spell.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.