I am develloping a land deck myself.
Im using;
2 Workshops (works well with: Crusible, Horn of Greed, (nullrod chalise defense grid)
4 Undiscovered Paradise (multi colour land, wich works with Horn of greed)
4 City of brass (Multi land without major drawback)
4 Gemstone mine (multi land without major drawback)
1 Barbarian Ring (1 Kill )
1x rift stone portal (Makes all lands more usefull like workshop, Clasial Chasm, Acient Tombs etc)
2-3 Acient tombs
2 Gods eye gate to Reiku (second kill, and works ok for stax)
2 Clasial Chasms (Combo card) I realy love this one



1x Fastbond
4x Exploration
3x Crusible of Worlds
3x Horn of Greed (draw engine)
3x Excavation (draw engine)

Mox Diamond (My unpowered mox)
Zuran Orb (infinete life)

Tutors:Mainly used for fastbond
Enlightend
Vamperic
Imperial Seal
Demonic Tutor
Crop Rotation
//
Still thinking about lim duls vault
Brainstorm


For Crusible/Horn of greed (Because the absence of power)
Mana Crypt
Solring
Manavault

Anti disrupt
2x Argivian Find
Academy ruins (to get my crusible back in play)
I am still not sure about the Horn of greeds, they do help the opponent, although In my opinion it does help you more.
Excavation is: Fastbond, Crusible: win  You will get a Chasm soon enough else you can tutor for it.

Zuran orb doesn;t do much for you except gaining life, allot of it. Makes it imposible for tendrils or goblins or what so ever to win.

I kicked my life from the loam out, it dint do that much good for me, but with your explanation I might throw it back in
Same for Bazaar


My sideboard is also quite difficult:
depends on the meta game, I will change it each time, depends on where you will be playing and on what event.



Other Kills I have tried:
Seismic Asault, works fine, You will need 2 gaeas blessings for infinite deck.
Natural Emergence, works rather funny then well,  its a bit to slow
Brainfreeze, with cloudstone curio, bouncing explorations again and again, it takes too much cards and slots for it to work properly