It simply states that a creature that isnt black or an artifact cant block, so your protected creature is still prevented from blocking as long as it isnt black or an artifact
Having some powerful knockout that hits anything equally means you have the tools to beat all the nonsense you didnt find the room to prepare for that week
If you're going otherworldly, you might as well have fun with the alien skies
Save the recent Thrulls in the Return to Ravnica block, you just don't see many of these creature types in new sets
as active, letting you get to your higher-cost characters quicker, or giving you more versatile turns
First, there is the creature that survives combat, maybe one thats about to die due to an effect at end of turn or a creature that blocked that can be sacrificed to feed an engine