yugioh hero meta deck Legendary Decks Trading Card Game : Toys & Games Like Jadens Elemental Hero Deck Yu-Gi-Oh! Legendary Hero Decks

Theyre awesome in EDH, considering that games go long, and they'll see play in Standard midrange and control decks

In practice, the answer is usually both

It won't deal regular combat damage unless you bring your life total back above 25 before the regular combat damage step

For four mana, you get an Artifact that you can tap to flip a coin, and if you win that flip, then you get to destroy all nonland permanents

The chances of your moves having no effect whatsoever are slim and are tied to certain types like Normal and Fighting against Ghost types, Electric against ground types, and Dragon against Fairy types, for example