Oddball Aeronauts: Snowtide Mercenary Cards

Snowtide Mercenary Cards is a mini-expansion for Oddball Aeronauts and/or for Oddball Aeronauts 2, which contains 5 cards. It was a paid add-on during the Oddball Aeronauts 2: Double the Trouble Kickstarter campaign in 2014. The 5 cards are: Fir Fae, Flurriers, Snow Heralds, the Dragoneer, and the Drift Patrol.

From the Kickstarter page:
"But, not to be outdone, the Fir Fae witches have been weaving their frosty spells and have conjured from the icicles on the Snowmaker’s runners a Snowtide add-on (...) you can get your grubby paws on 5 Snowtide Mercenaries, including a new Dragoneer!."