Theyre designed to sit in your hand without dominating it
ACE measures your cards on a scale from 110, with 10 being mint condition
(10/4/2019) If an effect allows you to cast a spell without paying its mana cost, you can't choose to cast it and pay unless another rule or effect allows you to cast that spell for a cost
Savvy players will try and bait out counter magic from you before playing the spells they really want to resolve, so you must learn to ration your answers but at the same time not allow game-winning cards to resolve if you can't deal with them later
Of course, not all kids are the same, so some of them might like these more strong, cool looking Pokemon or the more funky Alolan
If the opponent does not Knock Out your Black Kyurem EX or remove its access to unlimited Energy, it will quickly take the game, or tag in Keldeo EX and come back later