Loretta Fleise, Rare 30/30/30
Alliance. Nature.
Facilities: Mode
Stock: +/-10N
N = Facilities gained or lost
Huh, I'd been misreading this card. I didn't see the line where it sets your facilities based on mode. I had read it as comparing current facilities to the 3/3/3 at start (and not explicitly named such in the event of differing game settings), but it didn't make any sense with the high cost.
Your reasoning is valid. It needs some kind of check to have no effect if the necessary resources aren't present. And even then, the cost is inhibitive. You could "cash out" your facilities for a stock boost, setting 3/3/3 to 1/1/1 and gaining 60 stock (a net gain of 30 after cost), but the situations in which this would be useful would be few enough that you're better off taking another expensive Rare that directly cripples your opponent.
I suppose the primary consideration is that this card, if implemented, would most likely be drawn via the Nature keyword rather than included in a deck as part of a strategy. In that sense, crippling your own facilities to fund the play of another expensive Nature Rare could make perfect sense.
If the modes are limited 1-3, then it wouldn't need the check while increasing, but anyone going from <3 facilities up to 3 would have trouble gaining the 30/30/30 to begin with. In that situation, I'd reduce the cost to play it and tone down the reward. Limiting it instead as 1-5 could make sense, as jumping from 3/3/3 to 5/5/5 at a cost of 30 stock wouldn't be gamebreaking. By the time you have this card in hand and can play it, you've probably already increased at least one facility past the start value.