mtg sacrifice creature draw card Greater Good Eviscerator's Insight

Milling five cards and reviving a creature for just five mana is impressive enough, but with the Demonstrate mechanic, it can really shake things up in Commander

Returning a creature from your graveyard to your hand is useful, though its not as good as returning to the battlefield

But you might find some packages grow and shrink

It doesn't exactly make up for how limited the supply of this hotly-anticipated crop of crossover cards was however, nor the fact that some people were able to skip the hours-long queues

Combine it with Bloomburrows Starscape Cleric (and other options), and then all you need to do is make the opponent lose a single life to start a combination that wins on the spot

Quick answer: both