Each hex on the map is assigned a hex coordinate. It's visible on mouseover when viewing the terrain type (use shift+mouseover if occupied). Coordinates are always visible, even when fogged or unrevealed.

Flux wells spawn at the same five spots on the default map: 2:2, 2:10, 6:6, 10:2, and 10:10.

The Ivory Spire can control three flux wells from four spots: 2:6, 10:6, 6:10, and 6:2.

If you're prone to forgetting where you left that planar rift, tangler, or entangled enemy blunderbluss squad, noting the coordinates (or jotting them down somewhere) can help you remember.

I always remembered it by..

top left well = 3 down 3 right (all these are from corner)
bottom left well = 3 up 3 right
top right = 3 down 2 left
bottom right = 3 up 2 left
Middle = 7 up 7 left

That's Awesome! Thanks, I realized they spawned at the same place, but this helps for Ivory Rush.

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"I'll figure this out in the end. After all, options are deadly!"