These two phrases seem to do very similar things:
But Only If - suggest additional event or compensation, may be followed by any phrase
And Furthermore - require additional event or compensation, may NOT be followed by “It Was Not Meant To Be” nor “But Only If”. Must exhaust a Theme to use
I’m not sure how “suggest” and “require” are mechanically different here. IIUC, the player using And Furthermore pays the cost of Theme exhaustion to narrow down the possible responses.
Can any Polaris players chime in on how each phrase plays?