vaan104

goblin bushmaster, goblin rabble master, legion loyalist, hordeling outburst, dragon fodder
this is my modern goblin deck it might give you ideas
http://www.mtgvault.com/vaan104/decks/goblin-horde-modern/

cabal coffers, nykthos shrine to nyx, gray merchant of asphodel, crypt ghast, go for the throat, are all cards you should check out
phyrexian obliterator is awesome but expensive

you need vampire nighthawk in the main and thornbite staff works great with it

sheoldred, whispering one and reya dawnbringer might be good here

you need stoneforge mystic, umezawes jitte, and batterskull. godsend could be nice to and maybe brass squire

if you plan to use this in modern you need archive trap

http://www.mtgvault.com/vaan104/decks/wb-warriors/
this is my warrior deck it has some other options battle brawler is really nice

add nykthos, shrine to nyx and song of the dryads for removal

add Gisela and iroas

northy made a rafiq deck and I refined it a little check this out it is cheap and works awesome
http://www.mtgvault.com/vaan104/decks/budget-edh-glorious-swing/

maybe add some more counterspells remand and cryptic command ould be nice if you can afford them

omniscience might be fun

you could add vampiric tutor. mystical tutor and personal tutor can grab you a black tutor that you can use to get unhallowed.
with blue in the deck im really liking thassa's bident for card draw

if you use obzedat you might want to use whip of erebos they work great together

does that go on the stack? if it does id think you could sack the stage and keep the dark depths but im not sure

bitterblossoms are $40 not $400

actually you would keep the real dark depths because you would be sacrificing thespians to get lage

you could drop a land and add 1 nightmare and master of the feast is better then herald

doesn't have to be true dual lands could use shocks cheaper

just sb the pithing needle for 4 hexmages and add some dual lands