How to Obtain Escalation Sigils:
Complete Strongrooms on Diablo IV Gold Torment I difficulty or higher.
Open the Horadric Caches awarded for completion — these have a chance to drop Escalation Sigils.
Use the sigil to unlock the first dungeon of an Escalating Nightmare sequence.
Once you activate a sigil, there’s no turning back. You’re committed to finishing all three dungeons in one sitting. If you quit or fail, your run ends, and the sigil is consumed.
This system...
