x and y breakthrough booster box Pokemon XY Elite Trainer (Mewtwo Y) Pokemon BREAK Evolution opens a new pack to power that builds on a Pokemons existing strengths and creates all Pokemon XY BREAKthrough Booster Box

If this card is Normal or Special Summoned: You can reveal the top card of your opponent's Deck, and apply the appropriate effect based on its card type

Thats all there is to it, though, to be honest

C Common Red-Eyes Retro Dragon X DARK Level 4 [ DragonEffect ] ATK 1700 DEF 1600 If a Level 7 or lower "Red-Eyes" monster(s) you control is destroyed by your opponent's attack or card effect and sent to your GY, while this card is in your hand: You can Special Summon this card in Defense Position, and if you do, Special Summon as many of those destroyed monsters as possible in the same position they were in when destroyed

You are not stopping the game

Low cost Creature removal can let you play out your threats and not feel worried about keeping mana up to respond