Curse of Silence Curse of Silence is most effective in formats like Pioneer, Modern, and Legacy
But creating a Blood token does not count as investigating, and more importantly, sacrificing Blood requires you to also discard a card before you draw
These rare cards, which are sometimes found in the gold-strip sealed ZAP
The idea that we can get these 50-card top-up sets in Standard to keep things fresh, especially as Standard now rotates every three years for some unknowable reason, is a good one
For example, you could attack with Aspiring Champion and use Brainstorm to put a powerful Demon like Lord of Change on top of your library, ensuring that Aspiring Champion will become exactly what you intend and provide the most powerful result