- Ice Shields is a Hero Ability that Dr. Kavan can use during attacks.
- When used, Dr. Kavan creates ice shields on every nearby troop, as well as Critters and himself. These shields have low hitpoints but negate excess damage.
- The health of the shields deplete over time.
- You can use the Ice Shields to have your troops survive an attack from a high damage defense such as the Boom Cannon or Doom Cannon, without being destroyed or taking serious damage.
- Using the Ice Shields ability can protect Zookas from being destroyed by Mortars or Sniper Towers.
- The ability is ineffective against defenses that deal continuous damage such as the Flamethrower since the low damage per hit means that the Ice Shields only serve as extra hitpoints; they negate little damage.
- If the ability is used while troops have shields (either through the use of this ability or through the use of the Crystal Shield Projector temporary Gunboat ability), the ability will merely regenerate the shields back to maximum health; it does not create an extra layer of shield. Hence it should only be used when the troops do not already have such shields.
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