I Remade Monsters EXACTLY as described in the book...

Summary by Krater

An illustrator challenges himself to draw famous fantasy monsters—Cthulhu, the Balrog, and a White Walker—solely from text descriptions provided by his team, without knowing what the characters look like beforehand.

From the video

Answers: How well can an artist draw famous fantasy monsters using only text descriptions?

• monster character design
• illustrating from textual descriptions
• sketching fantasy creatures
• graphite and watercolor art
• drawing Cthulhu
• drawing the Balrog
• drawing a White Walker

What it concludes

• Drawing Cthulhu from a text description successfully resulted in a recognizable depiction of the creature.
• Drawing the Balrog with added digital fire effects in Photoshop created an ominous and dark final piece.
• Drawing a White Walker from a text description successfully resulted in a recognizable depiction of the character.