Thunderbolt

Thunderbolts are an environmental modifier in Sky City. They come in either positive or negative and a combination of these will weaken a plant in different ways. Anthiruim is immune to thunderbolts and will convert them into a large projectile that hurts a zombie. Any plant can get rid of of thunderbolts from itself by being fed Plant Food

Combinations

 * Positive+Positive: Deals continuous damage to the plant.
 * Negative+Negative: Stuns the plant.
 * Positive+Negative: Slows the plant to a crawl

Trivia

 * ASyringe affecting a plant is similar to the positive + negative combination of thunderbolts but wears out over time and cannot be instantly stopped by Plant Food.