Even when Vintage games moved into the Yawgmoths Will era, Mana Drain continued to play a key role, being one of the pillars the format was built on
There have been Standard sets, direct-to-Modern sets, Commander deck sets, and more
Aura Flux will do what Power Leak does, but on a much larger scale and with the ability to actually get rid of the enchantments
While not always the primary focus, this spread damage can disrupt opponents setups and secure key knockouts, making Greninja a versatile and widely used card
In decks where you can amplify this damage like Torbran, Thane of Red Fell, I can see this pulling some weight, but I wouldn't run it aside unless you're really committed to Burn + Spellslinging
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