Its usually best to have your opponents fight amongst themselves, and consistently goading their creatures can quickly snowball in your favor
The exact nature of the trading system has yet to be revealed, but there are a couple of things that are likely to be true
Sell your cards without a professional appraisal for ~10%-40% of their PSA-graded value
If a card with dredge is in your graveyard, and you would draw a card for any reason, you may instead return the card with dredge to your hand by putting a number of cards equal to the dredge number from your library into your graveyard
Her +1 creates three 1/1 Soldier tokens, which immediately protect her while building a small army
Aetherborn wisdom holds that when the time to die has come, the dying Aetherborn should be at peace with what's happening, and be grateful for all the wonderful things it has experienced until then