Hey Dubdub, want to talk about this edh deck a little bit?
Yeah, certainly, that's why it's here!
I use Oona, Queen of the Fae (clicked on yours because it is also b/u)
Oona is a good choice, one I went against because I didn't want to end up focused on infinite-combos (Power Artifact + Grim Monolith, especially).
marsh flats
verdant catacombs
misty rainforest
flooded strand
bloodstained mire
scalding tarn
I tried to be ultra-fundamentalist with the EDH rules, so I limited myself to only Polluted Delta for fetches, as it doesn't make reference to a basic land type that's not in the deck. No knock on your choice to include these. Additionally fetching less often leads to less time shuffling, which I prefer.
city of brass
cephalid collosium
lonely sandbar
barren moor
dreadship reef
tainted isle
underground river
These are basic islands in my list, basically, because I'm trying to maximize High Tide (and I could do more to that effect, Jwar Isle Refuge is probably not needed for fixing or gaining a life, so an additional basic island might be good). Also, since I have fewer fetches than you I am less likely to have a Swamp to turn on Tainted Isle.
dimir signet
I hate Signets. It's irrational, I know, but I hate them.
lim duls vault
This is a nice idea, though I'm not sure I want to spend too much time deciding what to place on top, when to ship five cards for five more.
grim tutor
imperial seal
Although I list Overwhelming Forces above, it's not a card I actually own. Generally I have tried not to use proxies in my decks, and I wouldn't be willing to shell out for these guys just for EDH use.
nights whisper
Though they aren't in my list above, I would think either of Hoarder's Greed or Moonlight Bargain are better than Night's Whisper.
senseis divining top
memory jar
I'm considering cutting these from my list. I feel like Top + Repeal is good, and Top + Predict is good, but I'll probably ending up not depending on mini-combos to do something worthwhile. I haven't found I'm as able to capitalize on Memory Jar in Wydwen as compared to another deck I have, Radha, which can usually vomit out creatures on a Jar turn.
timetwister
The Time Reversal in my list should be Timetwister, since I'm not going to have use for Timetwister in Vintage any time soon (since it's suicide against pretty much every deck in modern Vintage).
gush
I have had a hard time taking advantage of Gush's alternate cost, and found myself more often casting it, which, at five mana is not as good as Jace's Ingenuity (which I do run), or Moonlight Bargain, as I mention above.
turnabout
This is a cool idea, thanks! Mini-combo with High Tide, but also potentially able to 'Sleep' my opponents to protect planeswalkers for a turn.
etherium sculptor
cloud key
helm of awakening
magus of the future
future sight
tidespout tyrant
helm of obedience
leyline of the void
goblin charbelcher
mana severance
rings of brighthearth
power artifact
tendrills of agony
brainfreeze
As mentioned above, I'm not big on infinite combos in my casual format, Tyrant's interactions with fast mana not withstanding, since I just love that card.
What cards have been surprisingly strong for you?
I think Bribery probably has among the highest power level of any spells in the format. And Acquire is right there (though it's still on probation for me, as a new addition), usually netting a huge mana accelerant, if not a fat artifact creature finisher. I also really like Sapphire Medallion and Sphinx of Lost Truths.
