The attached adventure, Dread Whispers, lets players draw a card for one black and one generic mana
Even if it never attacks, you can make a bunch of zombies from milling yourself or anyone else
You choose the creature to teach as Pyromancy 101 resolves
Massive card advantage is at the top of this enchantment's job description: Underworld Breach turns your graveyard into a (huge) extension of your hand, and basically provides flashback to anything you cast
Veil of Summer Veil of Summer has the potential to be a counter target counterspell and draw a card. This multiformat staple can protect your creatures against black removal spells, make your spells uncounterable, and prevent effects that target you as a player (like Diabolic Edict)
TLDR The goal is simple: no marked cards , no mystery game pieces , and no token soup