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Summoning Heroes
In Heroes TD, players can summon new NFT Heroes using 2 NFT Heroes. Some CGC and HTD will be consumed in the process.
The newly summoned hero will bear the exclusive traits from the 2 summoners. More details can be found here:

Summoning Rule

  • Summoned NFT Heroes can't be summoned with the NFT Heroes that summoned him.
  • NFT Heroes summoned by one or two same NFT Heroes will not be able to summon together.
  • 1 NFT Hero can only be used to summon 7 times.
For example:
Hero A + Hero B summoned Hero AB1 , AB2 , AB3 , AB4...
Hero A + Hero C summoned Hero AC1 , AC2 , AC3 , AC4...
Hero D + Hero E summoned Hero DE1 , DE2 , DE3 , DE4...
Resulting in:
A , AB1 , AB2 , AB3 , AB4 can't be used to summon together as they have been summoned by Hero A.
B , AB1 , AB2 , AB3 , AB4 can't be used to summon together as they have been summoned by Hero B.
C , AC1 , AC2 , AC3 , AC4 can't be used to summon together as they have been summoned by Hero C.
D , DE1 , DE2 , DE3 , DE4 can't be used to summon together as they have been summoned by Hero D.
E , DE1 , DE2 , DE3 , DE4 can't be used to summon together as they have been summoned by Hero E.
AB1 , AB2 , AB3 , AB4 can't be used to summon together as they have been summoned by Hero A and Hero B.
AC1 , AC2 , AC3 , AC4 can't be used to summon together as they have been summoned by Hero A and Hero C.
D , E , DE1 , DE2 , DE3 , DE4 can't be used to summon together as they have been summoned by Hero D and Hero E.
AB1 , AB2 , AB3 , AB4 , AC1 , AC2 , AC3 , AC4 can't be used to summon together as they have been summoned by Hero A.
A + B can be used to summon new hero.
B + C can be used to summon new hero.
C + D can be used to summon new hero.
D + E can be used to summon new hero.
A + DE1 can be used to summon new hero. The same applies to B + DE1 or C + DE1.
A + DE2 can be used to summon new hero. The same applies to B + DE2 or C + DE2.
A + DE3 can be used to summon new hero. The same applies to B + DE3 or C + DE3.
A + DE4 can be used to summon new hero. The same applies to B + DE4 or C + DE4.
DE1 + AB1 can be used to summon new hero. The same applies to DE1 + AB2 or DE1 + AB3 or DE1 + AB4.
DE2 + AB2 can be used to summon new hero. The same applies to DE2 + AB2 or DE2 + AB3 or DE2 + AB4.
DE3 + AB3 can be used to summon new hero. The same applies to DE3 + AB2 or DE3 + AB3 or DE3 + AB4.
DE4 + AB4 can be used to summon new hero. The same applies to DE4 + AB2 or DE4 + AB3 or DE4 + AB4.
DE1 + AC1 can be used to summon new hero. The same applies to DE1 + AC2 or DE1 + AC3 or DE1 + AC4.
DE2 + AC2 can be used to summon new hero. The same applies to DE2 + AC2 or DE2 + AC3 or DE2 + AC4.
DE3 + AC3 can be used to summon new hero. The same applies to DE2 + AC2 or DE2 + AC3 or DE2 + AC4.
DE4 + AC4 can be used to summon new hero. The same applies to DE2 + AC2 or DE2 + AC3 or DE2 + AC4.
* These rules are subjected to change during game development.

Summon Count

Each NFT Heroes can only be used to summon 7 times. After each time, the cost of using that Hero to summon a new Hero will increase. On the other hand, the chance of summoning a Hero with better equipment increases. The higher โ€œSummon Countโ€ a Hero is, the more valuable he can be.

Cost of Summoning*

Each time 2 Heroes are used to summon a new Hero, a certain amount of CGC and HTD are consumed. The higher โ€œSummon Countโ€ a Hero is, the more cost needed to summon a new Hero.

Degrade/Upgrade Rate*

Depends on the Summon Count of each Hero participated in the summoning process, the % to create a Hero with better team will vary. Below is a table that describes the item degrade/upgrade rate corresponding to the Summon Count of the heroes in summoning process.
You can also try out the fertility prediction feature on the wiki pageโ€‹
* These information will be adjusted to suit the state of the market at that time