the aetherspark mtg card Aetherdrift: Most expensive cards Draw two cards FOIL The Aetherspark from Aetherdrift

There are also a series of uncommon cards called sidequests one in each colour

Murasa Sproutling While Murasa Sproutling is a far cry from Eternal Witness, it's still a good Kicker card and thus a solid inclusion in any Kicker deck like Verazol, the Split Current or Hallar, the Firefletcher

My argument was that mechanics were a tool and we shouldn't be afraid to use them again

it doesnt kill or exile, so your opponent cant replay their commander

Although Yuffie enters attacking when its ninjutsu ability resolves, it was never declared as an attacking creature (for purposes of abilities that trigger whenever a creature attacks, for example)

They don't offer the kind of power or efficiency that can easily be achieved by spending just a few dollars