See title.

Alright, fine. I'll write a real description.

This deck is stupily fun to play. It wins by using Phyrexian Unlife and life loss effects to drive your life total deep into the negatives and then playing either Repay in Kind or using Rite of Consumption on Death's Shadow (which actually gets bigger the farther into the negatives you are!). Ad Nauseum is what I like to combo off from, as at allows me to draw as much of my deck as I want while driving me deep into the negatives. The next turn I can double Rite two Shadows, and if that doesn't work I can Repay in Kind the turn after! Phyrexian Arena and Dark Tutelage provide powerful draw effects combined with more life loss, which comes in handy if my opponent puts me to zero before I can find a Nauseum. Wall of Omens and Ghostly Prison provide some much-needed defense, and the single Greater Auramancy is tutorable enchantment protection.

Now, this is defenitely not the most competitive deck. It's an easily-disrupted combo that usually goes off no earlier than turn 6. But it's hilarious and extremely fun to play, and never fails to create an enjoyable game for everyone involved.

And if I may brag just a bit, I recently went 2-1 at a small Modern event, beating Martyr/Proc and U/R Storm. When I resolved Repay in Kind against the Martyr/Proc player who was at 60+ life, the entire table went silent. But no one was bitter, and all of my opponents told me they enjoyed playing against the deck.

But anyway, this deck is surprisingly coherent, and makes for good times for everyone.

(P.S. Wizards needs to reprint Delaying Shield. Because it would be amazing in here.)