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Rare Freezes troops in range of 800 tiles around the building.

Attribute

Rare

Rank 0
Rank 0

Freezes troops in range of 300 tiles around the building.

Rank 1
Rank 1

Freezes troops in range of 400 tiles around the building.

Rank 2
Rank 2

Freezes troops in range of 500 tiles around the building.

Rank 3
Rank 3

Freezes troops in range of 600 tiles around the building.

Rank 4
Rank 4

Freezes troops in range of 700 tiles around the building.

Rank 5
Rank 5

Freezes troops in range of 800 tiles around the building.

Upgrade

Rare

Level Cost Health percentage HQ required
1 — 10 % —
2 50 12 % 0
3 70 14 % 0
4 100 16 % 5
5 140 18 % 6
6 200 20 % 7
7 280 24 % 8
8 400 28 % 9
9 560 32 % 10
10 800 36 % 11
11 1 100 40 % 12
12 1 550 46 % 15
13 2 100 52 % 16
14 2 950 58 % 17
15 4 000 64 % 18
16 5 700 70 % 19
Total 20 000 — —