Goblin bidding, Oversold, and elves (can't be too strong in MD5) aren't block... but here's what you listed...
Tooth and Nail, 2 ppl
Blue/White Control, 2 ppl
Goblin Bidding, 1 person
Elves, 1 person
Black Sui, 1 person
March Of The Machines, 1 person
Ravager affinity, 2 ppl
Broodstar Affinity, 2 ppl
Cranial Affinity, 1 person
Oversold Cemetary, 1 person
Beacon of Creation - Can generate tons of blockers, helps against goblins, elves, black sui, and affinity early on...
Creeping Mold: gets lands, artifacts, and enchantments... Slows tooth, control
Damping Matrix - shuts down ravager, march, elves,
Duplicant - perfect for getting your own colossus... and the colossus - doesn't get shuffled back in..
Icy Manipulator or Relic barrier - prevent the brood, ravager, or colossus from visiting you...
Isochron Scepter - nourish, oxidize, etc...
Reap and Sow - slows tooth, march, etc...
Sculpting Steel - great for playing right after a tooth...
Staff of Domination - very useful - but sad it costs so much to play...
Sundering Titan - this can really slow some decks - especially when they need mana to get thier stuff going, but costs a lot...
vEDALKEN oRRERY - this can't be bad, for any of your cards...
Overall Suggestions:
Damping Matrix doesn't stop the duplicant, sculpting steel, or orrery...
Relic is probably a good card to put in, over icy as icy costs more, and uses mana... it is stopped by the matrix... but can tap to stop the colossus, or ravager from visiting you...
Sculpting Steel - if it is a colossus - would also get shuffled into your library... Also helps to use their own strategy against them...
Orrery - It may take a 4-drop slot - but is definitely worth it...
Creeping Mold - It can help against every deck... even if it just buys you time by land killing...
Consider some of these for the sideboard, if nothing else...