mtg cards like sol ring Altered Art Magic The Gathering Revised Single

Not only does it ramp you when you play it, it even replaces itself when it dies

Ramunap Red isnt interested in playing against a plethora of 1/1 lifelink tokens, and thats exactly what Mavren Fein, Dusk Apostle can deliver, especially if your deck is poor at blocking like Ramunap Red is

WHEN WILL WE SEE MORE ELDRAZI

If your Cube features Pyretic Ritual and the like this card is very appealing, and I do imagine that it will be more effective at actually closing games on average than Empty the Warrens both for being far more effective with lower Storm counts and for producing bodies that matter far more in the late game

They can use these to spend on buying packs, while earning a few along the way

Sanctioned events are a different universe with different physics