Yu-Gi-Oh: 10 Most Powerful HERO Cards
3. A Hero Lives
If any Spell Card had to make this list, it had to be the only one currently Limited as of writing, and with the kind of good reason that means you'll never see that ban lifted.
Simply by having no monsters face-up on the field, A Hero Lives lets you summon 1 Level 4 or lower Elemental HERO from your deck. On the face of it that doesn't seem like a lot, especially when it can cost you as many as 4000LP to pull off, but it's the steps after that keep this card to 1.
Play this on your first turn to get Startos or Shadow Mist, adding Mask Change or another HERO to your hand, still with a Normal Summon to pull off. You could play the full Faris combo there and then, or use Solid Soldier to start swarming the field. Suddenly the LP cost means nothing, because you can easily move to OTK your opponent. Go back a few years to when this card was first limited and it was used to summon Bubbleman after emptying your hand and field. Go forward a few more and there will certainly be a new and even more fiendish use for this card.