To reach Rank 9 in Coven's Favor in Diablo 4 and unlock Gelena for crafting Coven's Debt Scrolls, you’ll need to focus on completing Whispers of the Dead and earning Grim Favors, which then contribute to Coven’s Favor progression. Here's a step-by-step guide to get you to Diablo 4 Items Rank 9 as efficiently as possible:

1. Focus on Completing Whispers of the Dead
Whispers of the Dead are seasonal activities marked on your map in red or blue zones.

These Whispers give you Grim Favors for completing various objectives such as:

Killing specific monsters

Collecting specific items

Escorting NPCs or protecting them

Completing dungeons or buy Diablo IV Items other tasks

Each Whisper has a challenge associated with it, and you’ll earn 1, 3, or 5 Grim Favors based on the difficulty of the task.