Long train of thought ahead, may or may not end up being directly useful for planning for this round...
Time won 4/5 of their duels last round. They lost 30/30 cards from the following Ghostmare, as a result of their loss.
Of the remaining 4 decks that survived last round, there are 2 Ghostals, 1 Ghostmare, and 1 Novabow.
They also get to salvage 6 cards from the following:
Spoiler for Hidden:
Hover over cards for details, click for permalink
4vj 4vj 4vj 4vj 4vj 5c7 5c7 5c7 5on 5rk 5uk 5uk 5uk 5uk 5uk 5uk 5uk 5uk 5uu 5uu 5uu 5v2 61q 7t8 7ta 7tb 7tc 7td 7tf 7tf 7tf 8pn
Hover over cards for details, click for permalink
5la 5la 5li 5lk 5lk 5lk 5lk 61o 61o 61o 61o 61o 61o 61o 61q 61q 622 622 622 622 63a 63a 63a 63a 63a 7jp 7jp 7jp 7jp 7jp 8pu
Hover over cards for details, click for permalink
52g 52g 52q 52q 542 542 5i5 5i5 5i5 5i5 5i5 5i7 5i7 5ia 5ia 5jm 5jm 5jm 5jm 5jm 5jm 5jm 718 718 718 718 718 718 71b 71b 8pk
Hover over cards for details, click for permalink
5l8 5l8 5l8 5l8 5l8 5l8 5l8 5l8 5l8 5l8 5mq 5mq 5mq 5mq 5mq 5lf 5lf 5lf 5ll 5ll 5ll 5ll 55s 55s 55s 55s 7ju 7k5 7k5 7n2 8pl
None of which replace either a lost GotP or Nightmare. The Aether salvage, however, gives them up to 4 more Fractals.
Assuming they have 7 GotP left (the amount we know for *certain* after their discard last round), it's probably a safe guess that they'll field 1 Ghostmare, and 2 Ghostals, rather than 1 Ghostmare and 3 Ghostals. I don't see a second Ghostmare happening, unless they have some Nightmares hidden.
In addition, Time is facing 4 other opponents this round:

.
Without thinking too far into it, I'd expect the Ghostmare to be thrown at us, rather than the Ghostal. Time knows we have DimShields, and they know we can salvage more from our win last round. DimShields beat Ghostal, but aren't as effective against Ghostmare.
We also have a chance of seeing some kind of Novabow, but I feel that Ghostmare is more likely. Especially since Aether has used a total of 8 DimShields in the past 2 rounds, 6 of which were lost in a loss, meaning they look vulnerable to Ghostal. Air has both DimShields AND Wings, so they might get the Ghostmare however...
As to Discarding/Salvaging/etc
Discards: .
Salvages: I'd say at least 1 DimShield, in case something happens. It's a shame they didn't pack a Fractal or two, as well.
Event cards: I say hide 0 Relics, and will has already decided not to beckon the Chaos Lord.
Take all of this with a grain of salt. It seems to me that Ghostmare is more likely, but I have a bad feeling in the pit of my stomach about it...