1. i understand that ghasts' inability to block sucks, but being a relentless attacker, is not the only reason why its ran; it also creates incremental card advantage when you discard it to lili, dredge it in the yard, etc because you don't actually lose any resources when you pitch them...its also more interesting now with cards like collective brutality..i also wouldn't be worried too much about playing them together with a lone nether spirit, they hardly interact with each other..but if you don't wish to run a purely offensive card you might add some more removal or utility..you might wanna try top, deed, another lili,
2. there's no reason not to run abrupt decay when you're splashing green, it improves the miracles matchup..i like a copy of deed in the main if i'm running green..you may experiment with nev's disk if you're looking for a quasi-effect in mono black..
3. here's a list running rotations: http://www.mtgtop8.com/event?e=13558&d=279780&f=LE i'm not sure about running a full-4 though..
4. if you wish to run deeds in the main, you may want to skip on the diamonds..
5. reanimator decks are probably the ones utilizing it the most lately, i've been seeing a lot of lists run it as a 1 or 2-of..but in pox, i think it has more synergy with the green splash..
6. i also like a singleton worm harvest in loam pox, another card i've being seeing in some lists lately is Vraska the Unseen..
7. 1 or 2 is good in a meta full o' DnT..dread of night is also good against them albeit a little more narrow..

