Actually, you didn't disprove what I said that it probably can't be done with 2 factors. Keeping 20% rax on an attacker for the entirety of a war is something that probably cannot be done. Not even new rax burning strategies, just same old deep chain and raze means in a long war every attacker is likely to experience at least some point with 0 or close to 0 actually built acres.
So yea, it probably can't be done even with 2 factors.
Same goes for keeping an overcasted godspeed on at all times (ignoring that effectiveness drops, so unless you're literally recasting an overcasted god speed every 48 hours, you're not getting the fall attack speed boost at all times.
Sorry if I did not add "in reality" to "can't be done with just one factor (besides avian) and probably not even two" but I pretty much assumed we were talking about "in reality."