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There's nothing quite like it

During your Main Phase: You can destroy 1 monster in your hand or field, and if you do, add 1 "Fire King" monster from your Deck to your hand

Unaffected by other cards' effects

Number 126 Language English Legal Formats Commander, Legacy, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Modern, Pauper, Pioneer, Standard, Timeless Rulings (3/16/2018) As Living Death resolves, all players exile their creature cards from graveyards at the same time

It has a splashy effect that is viable in no other format but Commander, and Scourge allows you to dabble in the politics of Commander games (unlike say, Thundermaw Hellkite who just Hulk smashes an unfortunate opponent)

And now it appears it has sold out