At the beginning of each player's upkeep, if they control more lands than you, they gain control of Road of Woe.
Each opponent life total is treated as if it were 4 less for the purposes of losing the game. (They lose with 4 or less life, instead of 0 or less).
Based on Longest Road for Challenge # 024.
I wasn't sure how closely to model the "gain control when you control more" and to avoid problems with ties in the (very rare) occasion where more than or equal to two but less than all players put lands into play simulataneously. I went for checking once per turn (although maybe it should be at end of turn?)
Opponents losing on 4 life instead of 0 is basically "artifact lava axe" but it'll occasionally be better or wose.
I specifically wanted the effect to stack if you could play multiples to be more like "get another 20% towards a victory condition" (even though there's only one of these in settlers), even though that makes the wording a little clunky. Can anyone think of a better wording?
It's a shame there's not really a bonus for having more lands, other than keeping control over this: if it's all-downside this looks a lot less attractive. Any suggestions?