Use the line on the brick to aim and move ever so slightly right and down from the top left corner and you'll hit it.

Nade Time till goes off : 5 seconds (Uses Skyboxes bug)
Fire fades: 13 seconds after throw

Nade Ranking (stars are rated as 5 is the worst and 0 is the best, so the more stars the more challenge/time/difficulty/risk)

Setup Time: ★★☆☆☆ (approx. 5 seconds)
Practice till Flawless execute: ★★★★☆ (approx. 5-10 attempts till you can hit it regularly)
Cost of Failure: ★★★☆☆ (Explodes in the air, bounces back)
Throw Difficulty: ★★★☆☆ (Can be easy with practice)

Nade Overall Rating: ★Intermediate★
|| Intermediate- Someone who practices occasionally ||