You target three permanents as you cast Wild Swing. You don’t randomly choose which one will be destroyed until Wild Swing resolves. If one of those permanents has become an illegal target by then, you randomly choose between the other two. If two of those permanents have become illegal targets by then, there is no random choice — the remaining permanent is destroyed.
2008-05-01
wotc
As Wild Swing resolves, there is no time to react between the time a permanent is chosen at random and the time it’s destroyed. If you want to put a regeneration shield on one of those permanents, or sacrifice it for some effect, or anything else, you must do so before Wild Swing resolves (and before you know which one of the permanents will be chosen at random).
Format Legality
Standard
Not Legal
Future
Not Legal
Historic
Not Legal
Timeless
Not Legal
Gladiator
Not Legal
Pioneer
Not Legal
Modern
Legal
Legacy
Legal
Pauper
Not Legal
Vintage
Legal
Penny
Legal
Commander
Legal
Oathbreaker
Legal
Standardbrawl
Not Legal
Brawl
Not Legal
Alchemy
Not Legal
Paupercommander
Not Legal
Duel
Legal
Oldschool
Not Legal
Premodern
Not Legal
Predh
Legal
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