EDIT (10.8/18): Added Blender script for base/cylinder modification.
EDIT (03/18/17): Added volcano base for Dragonslayer variant by request.
EDIT (2/27/17): Made a device to help put the magnets in the bases. See it here: http://www.thingiverse.com/thing:2141438
EDIT: I messed up exporting a couple of the files. Those have now been fixed.
This remix is by request. It contains two magnet slots per tile base. This avoids polarity issues, but obviously doubles the number of 3x1mm cylindrical magnets needed.