Lorwyn and Shadowmoor are my favorite planes in all of Magic and the creatures darker halves always unsettled me, especially the Merfolk
For each nonland card you mill this way, you lose 1 life and a rad counter
Black is the best color to splash in by far: with red, you get access to sacrifice effects to put more cards into your graveyard when you need to, while black and green is a slower but potentially stronger delirium archetype
Salvation Swan is a fixed Restoration Angel, but considering that resto dominated standard during its time, I expect the swan to be at least powerful
With the cohesion that the Seven Dwarfs offer each other and the various buffs from items, it can be a challenging deck to master but very effective
This even means you can also use Kenrith to manipulate your opponents into taking each other out