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Not only do you need to be consistently sacrificing artifacts or enchantments, but you also have to care about the life gain portion of the card to run it in the first place

[+2]: Artifact, instant, and sorcery spells you cast this turn cost 2 less to cast

The good news is, Black-Green has a critical mass of Collect Evidence cards which will trigger Insidious Roots, but this still kind of asks a lot of you

Aether Chaser has First Strike and "When Aether Chaser enters the battlefield, you get two energy counters"

On top of that, you get a big body that can bring you back from the brink, and it can also help you close out the game quickly