Sawtusk Demolisher
Creature — Beast
Mutate 
[[ keyword: "Trample" ]]
Whenever this creature mutates, destroy target noncreature permanent. Its controller creates a 3/3 green Beast creature token.
Aaron Miller
Rulings
If the target noncreature permanent is an illegal target by the time Sawtusk Demolisher’s last ability tries to resolve, the ability won’t resolve. No player will create a Beast token. If the target is legal but not destroyed (most likely because it has indestructible), its controller does create a Beast token.
(wotc • 2020-04-17)
Rulings
If the target noncreature permanent is an illegal target by the time Sawtusk Demolisher’s last ability tries to resolve, the ability won’t resolve. No player will create a Beast token. If the target is legal but not destroyed (most likely because it has indestructible), its controller does create a Beast token.
(wotc • 2020-04-17)