Pillar (Dream World) - OSRS Wiki

Pillars are scenery found in the Dream World during the Lunar Diplomacy quest. They have no interaction options and are purely decorative.

Pill World, DREAM WORLD Wiki

Dream World - The RuneScape Wiki

Lunar Diplomacy, Old School RuneScape Wiki

Final leagues 4 relic list : r/2007scape

Minigames - OSRS Wiki

Pillar (Dream World) - OSRS Wiki

Dream Mentor - OSRS Wiki

Oneiromancer - OSRS Wiki

Pillar (Hallowed Sepulchre) - OSRS Wiki

Dream World, Old School RuneScape Wiki

Lunar Diplomacy - OSRS Wiki

Brain Pillar - OSRS Wiki

Structural pillar - OSRS Wiki

Ring 4: Greed, JToH XL Project Wiki