[ Drop rate ] Elite Boxes
Test N° 1
10 Gold Elite Boxes = 1 Legendary
15 Silver Elite Boxes = 1 Legendary
25 Copper Elite Boxes = 1 Legendary
Test N° 2
5 Gold Elite Boxes = 1 Legendary
18 Silver Elite Boxes = 2 Legendary
33 Copper Elite Boxes = 1 Legendary
Test of Drop N° 1
For each 1 Gold Elite Chest i got 1 Silver Elite Box and 4 Copper Elite Boxes
Test of Drop N° 2
For each 1 Gold Elite Chest i got 8 Silver Elite Box and 10 Copper Elite Boxes
Test of Drop N° 3
For each 1 Gold Elite Chest i got 0 Silver Elite Box and 1 Copper Elite Boxes
Test of Drop N° 4
For each 1 Gold Elite Chest i got 9 Silver Elite Box and 16 Copper Elite Boxes
Test of Drop N° 5
For each 1 Gold Elite Chest i got 1 Silver Elite Box and 2 Copper Elite Boxes
[NEW]
I filled all the slots of my inventory [75] doing Jarl Elite:
Test of Drop N° 1
3 Wrath Jaw Egg
15 Elite Golden Box II = 5 Legendary
23 Elite Silver Box II = 3 Legendary
34 Elite Copper Box II = 0 Legendary
Test of Drop N° 2
2 Snaggletooth Egg
12 Elite Golden Box II = 7 Legendary
25 Elite Silver Box II = 6 Legendary
35 Elite Copper Box II = 0 Legendary
Test of Drop N° 3
2 Snaggletooth Egg
1 Wrath Jaw Egg
15 Elite Golden Box II = 2 Legendary
20 Elite Silver Box II = 1 Legendary
37 Elite Copper Box II = 1 Legendary
Test of Drop N° 1 Duflie
14 Elite Golden Box II = 7 Legendary
20 Elite Silver Box II = 2 Legendary
33 Elite Copper Box II = 0 Legendary
Posts here for we have an idea about the drop rates.