Flavor Text "Un sorriso pi adatto a un eroe." Haurchefant Greystone Set Number 354 Language Italiano Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Rulings (9/9/2022) You can tap any untapped legendary creature you control, including one you haven't controlled continuously since the beginning of your most recent turn, to pay the cost of Relic of Legends's activated ability.
That said, there is an easy way to get the 20-charge-counter win with Darksteel Reactor in Historic, but I don't think you're going to like it: you simply play Darksteel Reactor as the win condition in your Nexus of Fate / Wilderness Reclamation deck
Update: Actually, you can buy them from TCGplayer they are available here
But what the card does do is make your deck operate more consistently, allowing you to play lands from the top of your deck, and dodge the dissatisfaction of a late land draw
