So, the campaign I am currently in is set in Normandy Tribunal, and one of the players is from that part of Europe. When we discussed traveling down river, he asked what time of year it was, apparently in the spring and fall the river is high enough for travel, but in the winter and summer, it is not.
So, driving home from the game, I thought to myself, “How hard would it be for a Hermetic Magus to fix that? We got Aquam vis.”
So, base difficulty for filling a container with water is 2. Base size for water is a pond, which is bigger than any container I am considering building. I am considering a barrel of about 100 gallons. So, I build this effect into a 100 gallon barrel, with Touch range, moon duration, target individual and unlimited uses. Only a Level 20 effect. Then I build the barrel so that it tips over when full, tips back upright when empty and is triggered when it is upright.
So, questions
- How would I figure out if I am adding enough water to enable navigation? A lot of it depends on how steep and wide the river is, but if I knew these things, how would I figure it out?
- What is the downside to the river of having large amounts of water disappearing every full and new moon?
- No one did much irrigation from the river in 1222 France, right?
- This is in the Normandy Tribunal, which mostly takes the position that only when other magi are inconvenienced that interfering with mundanes is a problem. However, there is a canonical covenant (I think it is called Nici, but serf’s parma) which lies just downstream of us. I think as long as we negotiate with them about it before hand, they probably would be OK with it, as it would encourage trade in their area, but what reasons might they have of complaining?