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Common Adds 4000 shield to the building.

Rare Adds 8000 shield to the building.

Attribute

Common

Rank 0
Rank 0

Adds 200 shield to the building.

Rank 1
Rank 1

Adds 400 shield to the building.

Rank 2
Rank 2

Adds 700 shield to the building.

Rank 3
Rank 3

Adds 1200 shield to the building.

Rank 4
Rank 4

Adds 2200 shield to the building.

Rank 5
Rank 5

Adds 4000 shield to the building.

Rare

Rank 0
Rank 0

Adds 2000 shield to the building.

Rank 1
Rank 1

Adds 2600 shield to the building.

Rank 2
Rank 2

Adds 3500 shield to the building.

Rank 3
Rank 3

Adds 4600 shield to the building.

Rank 4
Rank 4

Adds 6000 shield to the building.

Rank 5
Rank 5

Adds 8000 shield to the building.

Upgrade

Common

Level Cost Health percentage HQ required
1 — 10 % —
2 20 12 % 0
3 40 14 % 0
4 70 16 % 5
5 120 18 % 6
6 180 20 % 7
7 270 24 % 8
8 400 28 % 9
9 700 32 % 10
10 1 200 36 % 11
11 2 000 40 % 12
Total 5 000 — —

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 — —