W:Mutavault, some things H:Some things

Hi there I'm looking for some things to build my first competitive deck. Don't have enough to trade for all of them but trying to trade for as many before I buy.
HIGH WANTS:
x4 mutavault
x4 hero's downfall (3 pending)

MEDIUM WANTS:
x1 Erebos,  God of the dead

LOW WANTS:
x20 Zendikar Swamps

NOTABLE HAVES:
x2 Chandra,  pyromaster m14
x1 Garruk,  Caller m14
x1 Foil Scavenging Ooze (non promo)
x1 Foil Oona,  Queen of the fae mma
x1 Supreme verdict rtr
x1 blinkmoth nexus mma
Check my trade list here http://deckbox.org/sets/656966