Lightning Trail

 is the final core magic upgrade in Bloons Super Monkey 2. When activated, this epic power generates a wave of supercharged lightning, extended by the movement of Super Monkey during the duration of the ability. It costs 21350.

Trivia

 * It doesn't pop the first bloon it hits.
 * Every 3-5 frames, it can spawn a mini-lightning-chain that has 6 pierce and pops up to 5 (?) layers off bloons it touches, depending on how far the bloon is from the initial strike point).