Prompt: drawing-style design featuring a fantasy scene with a skeleton-like troll sitting beside a chestnut tree with neon portal in background. The design should be minimalist and in black and white and only portal should be in vivid colors, design should be with clean lines and less detail. The troll should be whimsical and cartoonish, and the chestnut tree depicted with basic, clear shapes. The background should be solid black. This design should have the appearance of a simple illustration by Aaron Jasinski.