I am sure you have stashed a special villain somewhere, probably in the bottom drawer of your campaign. That villain is cunning, plain evil, unscrupulous, and will do anything to fulfill his master plan.
In our setting, that would be a certain genius wizard expelled from the Mage Academy. What did he do? He realized not only could arcane spark fuel the spells, but blood could, too. At first, the animals were sufficient. Later, he built this bloodmage dungeon and continued experimenting on sentient beings...
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Battle map properties:
Resolution: 3500x3500px @ 140 DPI
Grid: 25x25 @ 140px
Variations: Blood, Desert, Empty, Haunted, No Hue, No Light, No Tiles, Original, Ritual, Toxic
Versions: Grid and Gridless
Total: 20 maps
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License: Roll20 End User License Agreement
(Personal Use Only, Do Not Distribute)