Giving it a scale increases consistency among its responses, and also pushes it away from a pattern of responding 5 to most 1-5 scales, presumably because thats the most common rating in online data
First, the card is simply good on rate, especially in a Standard environment
They exist to help players identify the deck archetypes the set has been designed to support
And when we do flip it, spending just two mana for two 2/2s, a land (any land, not even just a basic), and a pile of landfall damage is an amazing deal
Ensoul Artifact 2/10 A cute little trick that has some good synergy with Inkmoth Nexus and Darksteel Citadel but has much of the same problems as Somber Hovergaurd
Another thing to note here is how good it can be to reanimate Gray Merchant of Asphodel a few times