Wind of Change

Saneok, it seems in Heroes, to get something valuable, you need to put in certain work to gain profit—the more valuable it becomes, culminating in a cohesive strategy, a line of play. Getting control from the sky... Is that cool?

firstly, to use it you still need 28 of all resources; secondly, is it cool when the variance of getting a full set is 28 of all resources in the best case and 154 of all resources in the worst case in a Conflux or Dungeon game?