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Aether duos will probably profit from T-bolts, quints and/or phase shields. Which will we scavenge and which will we start with?
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Gravity: Acceleration and Armagios are probably the most important for the strategy posted. Stuff like momentum and chargers is a staple in gravity decks, and probably more scavenge-able.
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Darkness: 6 devourers are crucial for the mitosis deck, add steals and Dusks, also a dragon and maybe nightfall (last war darkness didn't have many, if you want one you'll need it from the start or hope to get lucky).
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Fire: deflags are desirable in any fire duo, but not too many. Might want to add CC (ragepot and/or fire storm).
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Time: not seeing very powerful synergies here, stuff like RTs or Deja Vus could be fine. wizelsnarf suggested also procrastination for an adrenavu deck, but with Shields around I don't see much future to it.
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Other: a Shield could be included in practically any deck without hurting it for half the price of jade shield. It's a good option if the inmaterial or reflection effects are not needed. As for the weapons, I'd rather use staffs.
Comment on your picks, wizel:
Light: sanctuaries -could- be cool, but I'm not sure to which extent.
Air: flying adrena weapons anybody?
Pillars:
Aside form life pillars and pendulums, I think that the only thing that could profit from off-element pillars is light/life rustler duo.