mega mewtwo z pokemon card Y EX HP 210 Like new Colorless Psychic Infinity (10+) This attack does 30 more damage times the amount of Energy attached to both Active Pokémon Pokemon TCG XY Breakthrough 160/162

The card frames in this impact group specially when there are many of them around at the same time helps to break that core card layout concept, making the game harder to follow

For the low cost of two mana, Light-Paws states that whenever its controller casts an aura, they can search their library for another aura with a mana cost less than or equal to that aura's cost, putting that card directly into play attached to Light-Paws

Energy Chamber gives you a counter every upkeep, and Power Conduit is kind of like Moxite Refinery, but on a smaller scale

It'd take some creature type retconning to fix this

Copycat Carnival: Duplicate token generators or token-producing creatures using cards like "Rite of Replication" or "Clone Legion." This multiplies your token production, leading to overwhelming numbers on the battlefield

Only Assassins Trophy can do that