Core of Legacy Lands and essential in any green-red Commander build running a tight mana base
That said, there is one card in particular that has completely captivated my attention: Well, not exactly Blood Artist, but close: [card]Blood Artist[/card], combined with sacrifice outlets and creatures that leave behind tokens after dying, is the centerpiece of an archetype known as The Aristocrats, regardless of the format (and regardless of if there are any cards with the word aristocrat in the deck)
If your deck is the "deal triple damage" kinda build, making sure it can't be prevented is a nice upside, especially if people play a lot of The One Ring in your group
But then Planar Chaos arrived with different versions of cards from alternate timelines and in one such timeline Akroma was an angry Red Angel
And then were going to make the most of all those tokens were gonna make
You can copy warriors using Feldon of the Third Path, Cadric, Soul Kindler, and Calamity, Galloping Inferno