When refining original wings level 2 - 5 you will need to use x3 of the same type of wing (Eternity x3, Lord x3 etc).

x3 Lv 1 and 500,000 gold = Lv 2
x3 Lv 2 and 1,000,000 gold = Lv 3
x3 Lv 3 and 3,000,000 gold = Lv 4
x3 Lv 4 and 5,000,000 gold = Lv 5

When refining original wings level 6 you will need to use 6 total wings, one of each type.
x6 Lv 5 wings and 100,000,000 gold = Lv 6 Infinity

When refining level 2 - 5 you will need to use x3 of the same type of wing (Ancient Eternity x3, Ancient Lord x3 etc).

x3 Lv 1 and 500,000 gold = Lv 2
x3 Lv 2 and 1,000,000 gold = Lv 3
x3 Lv 3 and 3,000,000 gold = Lv 4
x3 Lv 4 and 5,000,000 gold = Lv 5

When refining level 6 you will need to use 5 total wings, one of each type
x5 Lv 5 wings and 100,000,000 gold = Random Lv 6

 

Exchanging level 6 Ancient wings

Any of these wings + 100m Gold (You won't get the same wings that you put as material)

Dragon Wings <Lv6>
Fallen Wings <Lv6>
Nightstalker Wings <Lv6>
Firedragon Wings <Lv6>
Iridescent Wings <Lv6>

 

Possible Outcomes

Dragon Wings <Lv6>
Fallen Wings <Lv6>
Nightstalker Wings <Lv6>
Firedragon Wings <Lv6>
Iridescent Wings <Lv6>

 

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Upgrade Ancient wings Lv6 to Infinity wings

Random 2 of these wings + 200m Gold (You won't get the same wings that you put as material)

Dragon Wings <Lv6>
Fallen Wings <Lv6>
Nightstalker Wings <Lv6>
Firedragon Wings <Lv6>
Iridescent Wings <Lv6>

 

Possible outcomes:

Blue Infinity Wings <Lv6>
Red Infinity Wings <Lv6>
Pink Infinity Wings <Lv6>
Rainbow Infinity Wings <Lv6>

 

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Exchanging level 6 Infinity wings

Infinity Wings + Any Colored Infinity Wings (You won't get the same wings that you put as material)

 

Possible outcomes:

Blue Infinity Wings <Lv6>
Red Infinity Wings <Lv6>
Pink Infinity Wings <Lv6>
Rainbow Infinity Wings <Lv6>

 

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Black Infinity wings recipe

Blue + Red + Pink + Rainbow Infinity Wings