You may play a Basic Pokemon by putting it into your Bench zone, evolve a Pokemon, attach an energy card to a Pokemon, play a trainer card, retreat your Active Pokemon, and use your Pokemons abilities
Cheers Steven Michael Hey Steven
Youre encouraged to use the cards in casual formats, though you can always bring this up as a Rule 0 discussion with your playgroup about potentially including cards that aren't technically legal
Sometimes you need to back up your household rules, and parental controls are a great solution
Cloud of Darkness is two colors, and I think thats a fair way to balance it a little because the ability to kill a creature and get a 3/3 flier is extremely powerful
Red also features numerous revelers, who reminded me of the debauched, sometimes lethal worshippers of Dionysis - the Greek god of wine and revelry