vaan104

lava spike and rift bolt are cards u should look at. its expensive but goblin guide is a good 1 also

u need this deck to be 60 cards. and overrun is usually a good card for a deck like this ezuri, renegade leader is a good card to

seeker of the way might be good here and some removal like path to exile or oblivion ring

u need to add some spells for getting lands/ mana fixing. chromatic lantern, darksteel ingot, harrow, explosive vegetation, journey of discovery are all good 1s.
this is my sliver edh
http://www.mtgvault.com/vaan104/decks/sliver-edh/

and u can only have 1 sliver hive in the deck

4 lightning bolt would be a good start. madcap skills is a nice card for a deck like this. monastery swiftspear is another you should look at

i just put together an izzet version
http://www.mtgvault.com/vaan104/decks/breath-of-fury/

breath of fury is cool. i think krenko could be nice in here, purphuros might be cool to

panharmonicon could be mean with this

you could add 1 or 2 sudden disappearance to flash all your creatures at once. also obzedat, ghost council would be cool

if u plan to use glacial chasm then most wont take damage for the devil maybe add some expedition maps to help get the chasm and guttersnipe might be useful u can probably drop a few lands to make room

maybe add some kind of defensive creature to give u more time for the combo. something like fog bank or wall of frost maybe?

id drop the petals put in 2 jace. braingeyser could be lowered or dropped and u probably dont need as much ramp as u have

keep it the legacy expensive version and throw in jace, the mindsculptor. and add a playset of force of will

id drop a few lands maybe add cyclonic rift, terramorphic expanse, balefire dragon is cool
this is my g/r dragon deck
http://www.mtgvault.com/vaan104/decks/atarka-edh/
trying to rebuild edh on this site if you could like/ comment
http://www.mtgvault.com/vaan104/decks/edh-help-desk/

song of the dryads is just a fun spell to use and maybe throw in a planeswalker like nissa, worldwaker
http://www.mtgvault.com/vaan104/decks/edh-help-desk/
trying to rebuild edh on this site if you could give a comment/ like

i recently built this 1 it might give u ideas
http://www.mtgvault.com/vaan104/decks/azorius-edh/
http://www.mtgvault.com/vaan104/decks/edh-help-desk/
trying to rebuild edh on this site if you could give a comment/ like

i like it all i can suggest is sol ring, terramorphic expanse and some more removal like oblivion ring and banishing light
http://www.mtgvault.com/vaan104/decks/edh-help-desk/
i want to revive edh on this site if u could help give a like/comment

urborg, tomb to yawgmoth would help and nykthos, shrine to nyx. silence the believers should be in here and you should use evolving wilds and terramorphic expanse in any multicolored edh
http://www.mtgvault.com/vaan104/decks/edh-help-desk/
i want to revive edh on this site if u could help give a like/comment

id drop a few mana ramp artifacts for more kill spells and throw in olivia voldaren to steal commanders. void stalker is nice for burying commanders to
http://www.mtgvault.com/vaan104/decks/edh-help-desk/
i want to revive edh on this site if u could help give a like/comment

urborg, tomb of yawgmoth might help and maybe throw in obzedat, ghost council just cause he is cool with whip of erebos. id also throw in some tutors diabolic tutor is cheap and ring of three wishes is good for edh, diabolic revelation is great
http://www.mtgvault.com/vaan104/decks/edh-help-desk/
i want to revive edh on this site if u could help give a like/comment