All Plane cards carried at least one ongoing effect, adding an extra rule or stipulation to matches as long as it remained face-up on the field
As I am sure you have heard, Kaldheim is bringing a bunch of new Snow-Matters cards to the table
If Wizards had, say, partnered up with Square-Enix and did something to coincide with the release of Final Fantasy VII Remake, I know for a fact I'd have been right there lining up
With Level up as a fantastic late-game mechanic, and Totem Armor existing across the colors, you have a solid set of choices at the top level
That deck already did silly things with stuff like Axis of Mortality, so this will just be another great way to enable kills and draw a downright stupid amount of cards off the top
Dual-Ink cards partially modify the third rule