Version 2.0 of this deck: http://tappedout.net/mtg-decks/20-10-14-ub-delve/

Changed again for FRF and after some playtesting. Need to playtest more with new cards.

Recommended changes for those with more of a budget:

Get rid of the Evolving Wilds, play two more Polluted Delta's and two half-colour Onslaught fetches (Bloodstained Mire and a Flooded Strand).

Drop any number of Murderous Cuts in favour of Hero's Downfall - it'll serve you better by allowing Planeswalker removal (outside of Vault/Despise) and leave your graveyard open for DTT delving.