If the targeted creature is an illegal target when Somberwald Stag’s ability tries to resolve, the ability doesn’t resolve. If Somberwald Stag is no longer on the battlefield, the targeted creature won’t deal or be dealt damage.
13-07-2016
wotc
You choose the target of the triggered ability as it goes on the stack, but you choose whether or not to fight as that ability resolves.
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.