Mid upgrade of water shard.

Cast corruption on water shard and started to build new death shard

Water shard upgrade still in queue so swapped death shard to front of build queue then again for upgrade (corruption needs to clear build queue of shard upgrades)

Shard now produces water and death mana until water upgrade is complete (keep pushing to end of build queue to exploit this).

After repeating to test, shard produced death mana only after water upgrade complete but continued to spawn reflection elementals as if still a water shard (no idea whats going on here).