hi, bebe, two questions about your revised list
(you mentioned that I played the deck with full power at dülmen, so my list differs from yours a little bit in the mana base):

Platinum Angel in sb?
Doesn't it come to late against combo, cause you will never side in oath against combo and 7 mana is two expensive to cast without moxen acceleration. I would prefer arcane laboratory or perhaps stifle...

Crucible main?
I think its a "win more" card in this deck and not worth the 2 slots, but I will give it a try. To protect/strengthen your mana base its not necessary imho. I played a lot of games where my opponent casts CoW and most of the time I had no disadvantage 'cause I already had basic lands or some moxen in play. Decks that run CoW normaly doesn't run Null Rod, so your mana base is mostly safe (ok, they run mox monkey, but if they manage to get  CoW and mox monkey through your counters, then something went wrong already).
Thats one great advantage of this deck: You need only few mana to lay your combo and protect it two rounds. A lot of games I won with dreadnought or colossus and one land on table. Maybe my playstyle of this deck is more AGGRO than control.

EDIT:
my decklist from last dülmen:
// Lands
    3 Tropical Island
    4 Island
    4 Flooded Strand
    1 Polluted Delta
    3 Wasteland
    1 Strip Mine

// Creatures
    4 Phyrexian Dreadnought
    1 Darksteel Colossus

// Spells
    4 Illusionary Mask
    3 Mana Leak
    3 Daze
    4 Brainstorm
    3 Sylvan Library
    1 Fact or Fiction
    1 Tinker
    1 Mystical Tutor
    1 Gush
    1 Ancestral Recall
    1 Cunning Wish
    4 Serum Visions
    1 Time Walk
    4 Force of Will
    1 Sol Ring
    1 Mana Crypt  
    1 Black Lotus
    1 Mox Pearl
    1 Mox Jet
    1 Mox Ruby
    1 Mox Sapphire
    1 Mox Emerald

// Sideboard
SB: 1 Darksteel Colossus
SB: 1 Morphling
SB: 4 Oath of Druids
SB: 2 Naturalize
SB: 1 Rebuild
SB: 1 Tel-Jilad Justice
SB: 1 Gaea's Blessing
SB: 3 Blue Elemental Blast
SB: 1 Oxidize