6 True-Name Nemesis At first, True-Name Nemesis seems like it doesn't belong on this list
Supposing you have as few as five cards in your hand, that's 20 damage straight to the dome
This effect should be crisp and uniform across the entire card
The ultimate in-archetype boss monster, "Unchained Abomination", has three once-per-turn Trigger Effects that each destroy 1 card on the field: once if an on-field card is destroyed by another card's effect, once if a monster is destroyed by battle, and once during the End Phase
Shining Genesect likes to pick one color of energy, move it around a bunch, and use a metric ton of the stuff to pew pew things, like Basically every other Genesect card ever
Some cards are best left raw like low-value duplicates or cards youre not planning to keep long-term