yugioh duels from the deep booster box Yu-Gi-Oh! TCG: Legendary Duelists: The new Legendary Duelists set will also include a hard Yu-Gi-Oh! Boosterbox - Legendary Duelists:

As is often the case, Red tends towards aggression in the set and it has some strong removal to help back that up with cards like Excavation Explosion and Pyrrhic Blast

Ravenous Gigantotherium can't devour creatures entering the battlefield at the same time as it

Avoiding permanents is probably the easiest way to meet the restriction since playing a deck with a bunch of creatures while also ensuring each has an activated ability seems difficult

Thats especially true because Delighted Halfling can also be tapped for one mana of any colour, as long as that mana is being used to cast a legendary spell

And with cards like Mulch, Armored Skaab, Dream Twist, and Deranged Assistant helping you rip through your library, that's not a particularly difficult task to accomplish

This is already true almost all of the time, but if you manage to engineer a game state involving Floral Spuzzem and R&D's Secret Lair, you'll be glad you have this