It may not warrant legal action, but it certainly doesnt inspire player confidence, either
Cascade itself is something of an alternative cost, and the requirements for being able to cast that exiled spell rely on the regular mana cost of a card rather than any alternative, optional cost
I also spoke with Wizards of the Coast Art Director Ovidio Cartagena about those cards, the set as a whole, and why Magics depiction of the menacing Balrog doesnt have wings
If you're using printed tokens, great
Fun Ranking: Want To Build Wildsear, Scouring Maw Gruul enchantress isnt something you normally see, but if Pantlaza, Sun-Favored is any indication, a commander that gives you cascade will probably be busted