What can be done to beat draw7 and BelcherCombo?

[MatzeXXL]

What can be put for example in a 3c-4c Keeper to make matchups better against these 2 decks?

Some ideas: Stifle, Duress, Mind Twist, Counterthings, Arcane Laboratory (Tendrils....does Lab help here), Null Rod....what else???

The decks (dont discuss about the exact decklists, I just want hints what to GENERALLY do against them)

The draw7:

1 Memory Jar
1 Demonic Tutor
1 Necropotence
2 Tendrils of Agony
1 Vampiric Tutor
1 Yawgmoth's Bargain
1 Yawgmoth's Will
1 Ancestral Recall
4 Brainstorm
1 Chain of Vapor
3 Diminishing Returns
4 Force of Will
1 Hurkyl's Recall
1 Mind's Desire
1 Time Walk
1 Timetwister
1 Tinker
1 Windfall
1 Crop Rotation
1 Fastbond
1 Wheel of Fortune
4 Elvish Spirit Guide
4 Dark Ritual
1 Black Lotus
1 Lion's Eye Diamond
1 Lotus Petal
1 Mana Crypt
1 Mana Vault
1 Mox Emerald
1 Mox Jet
1 Mox Pearl
1 Mox Ruby
1 Mox Sapphire
1 Sol Ring
4 City of Brass
4 Gemstone Mine
2 Glimmervoid
1 Tolarian Academy

SB:
4 Xantid Swarm
4 Illusionary Mask
4 Phrexian Dreadnough
3 Hurkyl's Recall


Belcher:

/Search
3 Spoils of the Vault
1 Demonic Consultation
1 Demonic Tutor
1 Vampiric Tutor
4 Land Grant

//Disruption
3 Duress
3 Unmask
2 Cabal Therapy

//Acceleration
1 Black Lotus
5 Moxen
1 Sol Ring
1 Chrome Mox
1 Mana Crypt
1 Mana Vault
1 Grim Monolith
1 Lion's Eye Diamond
1 Lotus Petal
4 Dark Ritual
4 Elvish Spirit Guide
4 Tinder Wall
4 Eladamri's Vineyard
4 Chromatic Sphere

//The Broken
1 Yawgmoth's Will
1 Necropotence
1 Yawgmoth's Will
1 Channel

//Land
1 Bayou

//Kill
4 Goblin Charbelcher

[Jacob Orlove]

Closed. Figure out which guidelines you broke yourself.