Tips when making a deck:
The first you should do when making a deck is ask/answer questions. Set your goal.
What is my goal?
I don't know what your goal is, other than to make an original deck. You should have a GOAL in mind when creating a deck. (e.g. My goal is to create a highly defensive deck that uses poison to kill enimies)
What am I trying to build?
You are trying to build Graboid/Denial (Denial meaning both mana and permanent control).
What would you classify the deck as?
Simply name the deck type. (Poison, Mass, Rush, Delay, Creature Control, Permanent Control, Mana Absorption, Regen, Creature Aggro, Buffing, Burn and etc.) It is a good idea to have ONE major focus and branching into synergies. aka Mass+regen.
Mana control, permanent destruction & creature aggro
Does this deck conflict? What are the synergies? (e.g. rush control deck)
Your deck seems to conflict. Denial/Creature Aggro.
A denial deck consists of both mana control and permanent destruction as a main focus.
Creature aggro deck = a majority of your damage source. Hard hitters that have a problem surviving.
There appears to be very little synergies with a mana control and creature aggro. They are in two totally different categories and do not have a way to directly complement each other. (be especially careful when looking to include multiple elements too)
Once you ask/answer those questions and feel like there is something there... move on to deck construction.
ALSO: don't be afraid to write down good card combos when you come across them. You can base your deck off of card combos or incorporate them in....
(Good example would be Fallen Druid + Boneyard)
I see where you are trying to go with the deck... Have some hard hitters while denying them of mana and pillars... Those two deck ideas don't really mesh but if you want to keep trying I recommend: Ridding yourself of the gravity element and go toward DARKNESS! Devourers and Steals, which is both mana control and permanent control.