Aggro/Tempo deck, with the goal to ideally get The Foundry up as quickly as possible. Almost all characters will benefit, but for Foundry to be worth playing you'll want uniques that provide overwhelming value if triggered out of hand.

Even if you need to play them for tempo without Foundry, or resupply into them, they should still play aggressively from reserve. Common Haven provides great value (triggers off Foundry as well), and can provide a backup to meet conditions for those uniques coming out of reserve

There are good tools to deal with threats. 6x Sabotage characters that also synergize with Foundry for additional value. Rare Mana Eruption for 2 mana makes it more versatile and doesn't give up as much tempo; hopefully Tiny Jinn helps make up for the mana. Intimidation trades very well to help win expeditions, but you could consider cutting them if you need space to test something else.

UPDATE 1 - REFINEMENT

>CUT: 3x Mighty Jinn - I found myself putting him in mana which is not a good sign. Don't feel like he fits he deck well as he doesn't synergize with Foundry, can be pretty low tempo and a bit of a liability with a 0 stat in water, plus he was the highest cost card of the deck (outside of 1 unique)

>ADDED: 3x Axiom Salvager - on the other extreme to lower the mana curve and play more aggressively, having additional 1 drops comes in handy, the resupply helps balance out losing mighty jinn a bit. Also synergizing with Foundry which is a plus.

UPDATE 2 - MORE POWER

>CUT: 3x Rare Sun Wukong - this one hurts as I love the rare, but I want to try the common and make room for some other changes

>ADDED: 3x Rare Ratatoskr for Common

>CUT: 3x Axiom Salvager - seemed underwhelming and and too slow, did not like resupply over straight draw for the foundry deck

>ADDED: 3x Foundry Armorer - raw value and power, flexible by being able to target expeditions for the brassbug

For Uniques: Personally I target 1-3 cost uniques out of hand with powerful boosts when played form reserve (Ie. gain 3, give 2 twice). Draw is always nice though in general aim for max value from the Foundry. I opted for 1x Atlas which comes in at 6/5/5 gigantic for 5 mana