The decks incredibly consistent, with playsets of Ancient Stirrings, Chromatic Star, and Chromatic Sphere drawing bundles of cards and mitigating the restrictions of colorless mana while land tutors like Expedition Map find missing pieces
Blackmail does scale well with other discard more so than most and as such I have played it in Rack themed black decks before which want a heavy number of discard cards
Gaea's Blessing (T1, Ext, S, Block) Technically a cantrip, Gaea's Blessing puts your best cards back into your deck (or your opponent's cards into his deck), plus gives you a chance to draw them back
In Commander, this card is often reanimated early to either draw immediate heat or completely warp the game state in your favor
Losing the game
Flickering, or Blinking Loot resets its Exhaust abilities, allowing them to be used again