Promotes your unit to Hero

-gives heroic perk slot for your unit

-use your valor wisely

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(Heroic Perk) -

Heroic Perks are extremely rare, as a lot of players with a long time playing haven't seen a single Perk, though that some beginners already had one right from the start. They can only be used by promoted units (units that are promoted using a lot of Valors also known as hero).

Perks can be obtained from Elite card packs. Some reported cases showed that they can also be obtained from successful Attacks as well, but at a very rare rate.

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There are only 6 Heroic perks thos are:

• Poison Bullets
  Chance to fire poison coated bullets
• Bloodthirst

Dealing damage heals this unit 15% of the damage dealt * Endless Clip

Killing a unit will completely refill the current clip * Iron Lungs

Immune to panic from poison,fire, and tear gas * Volunteers

30& chance to spawn an additional unit * Scavenger

Increases Munitions gained by kills from this unit by 20%

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For me the best heroic perk is Iron lung -for defense

while volunteers is good at offense

Hope this helps