This process has also been used across both Strixhaven sets for the Mystical Archive cards, with both gold and silver etched foils making up some of the special variants for this set-exclusive list
The swirling nexus in the center of the woods seems to tell a story of its own, one well never have answered or explained other than something is occurring deep in the woods, and you can bear witness to it
Transforming a Valki or Will/Rowan will kill the other side instantly, for example, since it needs to enter to receive its starting loyalty counters
They're all very easy to Tutor up via cards like Enlightened Tutor, Mystical Tutor, Idyllic Tutor, Solve the Equation, Fabricate, Reshape, Transmute Artifact, Reckless Handling, Goblin Engineer & Gamble, in addition to being easy to recur via your Commander's ability
Cheap legendary creatures gain more and more appeal for Cube all the time, and theres something really exciting about a Cube where casting Turn 1 K-9, Mox Amber, and Emry, Lurker of the Loch is a potential opening