The -3 lets you destroy a target creature, and finally, the -6 gives you an emblem that states "whenever you gain life, target opponent loses that much life." Given that this card only costs four mana to cas t, it, like most of Witherbloom, is quite finely balanced and should see plenty of play across Standard and Commander
Not everyone has an abundance of rare and mythic wildcards to burn on every set, after all
Flicker effects are also pretty interesting with battles
Even the unique Mutagen tokens created for this set dont actually turn creatures into mutants when used
Eriette, the Beguiler Even though it wont work if it targets lands, making my Spreading Seas dreams crash, Eriette, the Beguiler is still a fun one to brew around in a pseudo-steal-themed deck