An epic card that increases AOE damage to specific sources, including Inner Land Mine, Poison Swamp, Smart Missile, Flame Bot, and Land Mine by [X] percentage.

• Area of Effect Mastery increases the range of all damage area of effects, and unlocks additional research.
• This card is unlocked as a mastery reward at Tier 20 Wave 80. Additionally, the prerequisites for unlocking Card Mastery stays at 30 maxed cards, so your access to Card Mastery is not impacted by new milestone content.

Card Mastery

• Area of Effect Mastery - Lab values, costs, and duration (9 levels)

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