Since the full spoiler is out now, here are the cards, that cathced my eye:
-Boots of Speed: Cubeable. Crystal Slipper/Strider Harness become a lot better if the equipment can be played on turn 1. I think it's best compared to Goblin Motivator/Bloodlust Inciter. I personally think that not having to pay 1 more to grant haste is a slight upside over being an equipment rather than a fragile and otherwise uselesss 1/1.
-Circle of the Moon Druid: Cubeable. I'm not completely sold on this. It's not like 4/2s are amazing at attacking into the abundance of 2/Xs, which are happy to trade with this. If the P/T switch on your turn were to be a "may" ability, I would have liked this a lot more.
-Minimus Containment: Cubeable. Very flexible removal with a small downside. Works well with Auramancers.
-Owlbear: Staple. Auto include. An absolutely decent body, that replaces itself.
-Priest of Ancient Lore: Staple. Auto include. 3 mana 2 power draws a card is always great.
-Soulknife Spy: Cubeable. Seems like Stealer of Secrets now has 3 power. It's still quite good with Aerial Guide and alike, but sadly has a hard time connecting on it's own.
-Thieves' Tools: Cubeable. I overlooked this at first, but on second thought making a creature with up to 3 power unblockable can be really strong and the Treasure makes the first equip basically cost 1.
-Boots of Speed: i might consider a split between the creature and the boots. the +1+0 kinda justifies the manacost, but also makes it slower.
-Circle of the Moon Druid: a 2/4 for 3 is already what im looking for. This is not an aggrocard, but can become one as soon as you get to attack. sure slot for me.
-Minimus Containment: Im not looking for another cmc3 removal. Certainly not one that ramps and fixes my opp into even bigger threats.
-Owlbear: the better version of the ape. safe add no2.
-Priest of Ancient Lore: I wont run it, as it doesnt help my whites aggroplan very much. Time is money and I dont need the value.
-Soulknife Spy: its more Thieving Otter than Stealer of Secrets, but the otter can draw with ping equips. I also wonder at what point the opponent dies before the card advantage adds up. Unless it gets evasion its a very borderline card.
-Thieves' Tools: cant be blocked is a very powerful mechanic, but nothing im looking for on a black artifact right now.
I don't really like the "selfbounce" archetype as I think, that it's way too slow. The idea of this arcehtype is to simply constantly attack without really loosing tempo, while never running out of gas or slow the opponent down with stuff like Hands of Binding, Sigil of Sleep.
I don't really understand why Skyshroud Ambush is digital only. I realize to use "Wins" they have to hide a ton of technical rules jargon behind the curtain but they way they do it now is pretty stupid (people are comparing Time to Feed. The obvious extension to this would be "kills" which would be even more useful in templating.