When Silent-Blade Oni deals combat damage to a player, you can look at that player's hand, giving you tons of additional information
The second line is the Stoutland BCR line, which is our main attacker. With Stoutland Active and our opponent Paralyzed, this deck capitalizes on a weakness of many decks in the Expanded formatthat they rely on Guzma as their sole way of getting out of the Active
Delirium even upgrades the land tutor, going from a basic land to any land, so you could find cards like Dark Depths and Field of the Dead to suit your needs
These combo finisher cards can seamlessly work alongside your soul sisters to generate value until you have the pieces you need
If gets a lot better if you can make a lot of mana, though
Its mainly just a 2-drop that gives a lot of card advantage, but it can also be a key combo piece thanks to Boggart Harbinger setting it up