pokemon gym challenge 1st edition booster pack Heroes Box - Surge and Erika and become a Gym Hero yourself Pokemon Booster Box: Gym Challenge

You can do 6 face damage for four mana with this card

So, there are limits, hence probably why it was printed in a Standard-legal set

Ultra Pro Playmat: MTG Final Fantasy - Sephiroth, Fabled SOLDIER / Sephiroth, One-Winged Angel (Double-Sided) Ultra Pro Playmat: MTG Final Fantasy - Sephiroth, Fabled SOLDIER / Sephiroth, One-Winged Angel (Double-Sided) Ultra Pro Double-Sided Playmats featuring popular Magic: The GatheringFINAL FANTASY Sephiroth, Fabled SOLDIER / Sephiroth, One-Winged Angel artwork printed on both sides of the playmat

Of the three, the most impressive is the card with Fire-type Eeveelution Flareon shown on ita reprint of a card originally from Amazing Volt Tackle [S4]