You'll eventually reach the 'Ley Line Confluence', a massive chamber where raw magical energy pulses. Your objective is to 'Find the Blight Lord's Sanctum'. This area is heavily defended by 'Ley Line Guardians' (powerful elemental constructs) and 'Corrupted Elementals' (fire, ice, lightning variants). Ley Line Guardians are resistant to all but their opposing element; use Phoenix Form against ice, Electric Eel Form against water, etc. Corrupted Elementals are straightforward but dangerous in groups.
The Confluence features 'Ley Line Bridges' that only appear when specific 'Elemental Runes' are activated. You'll need to use the corresponding Prime Form's special ability on each rune to make the bridge appear. For example, Phoenix Form for a fire rune, Electric Eel Form for a lightning rune, and a future ice-based form for an ice rune. This requires careful form management and Essence conservation. The Blight Lord's Sanctum is located at the very center of the Confluence, accessible only after all bridges are formed.