Emma coolly strolled into the cafe. She stepped up to the counter, where she ordered an Americano. Sitting down at an empty table, she sipped her coffee and read the New York Times. Someone brushed by her, causing her to spill her coffee on her shirt. A green glimmer appeared. Shoot, she thought, the illusion is going to wear off. She casually waved her hand over her shirt, and the stain disappeared.