pokemon pikachu rare card - 160/159 - Crown Zenith Colorless Thunderbolt (80) Discard all Energy attached to this Pokémon The Rarest and Most Expensive

The instant burn that could potentially take out two dorks in the right circumstances or tapping and drawing a card was incredibly versatile, and gave you tools against both aggro or control/combo in your main deck without needing to sideboard later

Aside from being one of the few black cards that gives you energy counters when it enters the battlefield, you can pair it with others that also give you counters to return bigger creatures, making the difference negligible

Aurorus (Illustration Rare) embed::[[Aurorus (me3-92)]] Aurorus also deserves a mention here

It even functions with split cards like Commit / Memory, dealing damage equal to the combined mana value

But then, just as the warriors lay down their swords and the battle seems like it's at an end, the combatants catch a glimmer of something just over yonder horizon