If you're already a master at turning Mars into a green paradise, you know that every small advantage can be the difference between corporate success and total loss. This is the Homeostasis Bureau promo card, a special item that gained prominence during the Prelude 2 Kickstarter and often appears at board game conventions. But don't be fooled by the 'just another card' look: it's an active card with the Building tag, meaning it joins your game to provide that strategic boost every Terraforming Mars player loves to hunt for.

Its mechanic is straightforward and incredibly powerful for those focusing on accelerating the habitability process. Whenever you successfully raise the planet's temperature, the Homeostasis Bureau kicks in, granting you a bonus of 3 million euros (M€) straight to your bank. But it doesn't stop there: it also gives your heat production a boost, jumping up two levels at once! It's the kind of card that makes you want to focus all your actions on warming up that frozen planet to reap the financial and thermal rewards immediately. It's an essential item for collectors and for anyone looking to add an extra layer of efficiency to their space exploration strategy. If you want to dominate the solar system, having these promo cards in hand is like having a much more aggressive business plan in your pocket!