shadowless pokemon cards meaning How to tell vs Shadow Blastoise Unlimited (Non Shadowless) Shadowless vs. Unlimited: The Grading

This means it's not possible to cheat creatures into play out of nowhere (which madness can do), but it also means you're granted more flexibility, because you can cast a spell for its mayhem cost at any point during the turn in which it was discarded (rather than having to choose immediately as per madness rules)

To get good returns on this it is really a five drop card you immediately follow with a land, ideally a sac land

Notes: Available only in Planeswalker Decks

Being able to make an opponent sacrifice a creature can, on turn two or three, leave them with nothing to attack with, helping her stick around for longer