Location:
Volcano Dungeon, Ginger Island.
Strategy:
Magma Sprites are similar to Dust Sprites but stronger and immune to fire. Magma Dugs are burrowing enemies that pop out of the ground. Both are found in the Volcano Dungeon. For Sprites, use a fast weapon and avoid their explosion. For Dugs, wait for them to emerge fully before attacking. The environment in the Volcano Dungeon can also be dangerous (lava, fireballs), so stay alert. Bring plenty of healing items and consider defense buffs.
Rewards:
Cinder Shards, Magma Cap (rare), Magma Geode.