PS: need help about these spells:

[b]Grimorium Verum - First Seal:[/b] Summons the gigantic Grimorium Verum, hovering way above the battlefield. Shackled by arcane chains and sealed by magic, It cannot be opened yet. Its presence on the battlefield absorbs soul essence from living beings in a steady rate, making it more exhausting to cast a spell or any ability that uses soul essence. (excluding the grimoire master)
[b]Grimorium Verum - Second Seal:[/b] The arcane chains break, only the magic seals remaining. The Grimoire Verum stops absorbing soul essence, but it starts absorbing spells casted in the area. (excluding the ones from the grimoire master).
[b]Grimorium Verum - Ad Infinitum:[/b]

Specifically for the third phase.