Aug 23 · 5 min read

(*Aug 29th update)
- We changed the procedure a little.
-Added the maintenance on the crypto spells side.

Finally, a world where items in the game can be used in other games has come true!

Let me introduce “CRYPTO SPELLS × MyCryptoHeroes collaboration”.


August 29, 2019 (Thursday) After maintenance — Until both games end *1

Maintenance: Thursday, August 29, 2019, scheduled from UTC 2:00 to 3:00

Both games have created a function to move the assets to the world of their own game from the ETH network, so if you move them to the ETH network, you can play the game with these assets until both games end.

* The functions received on the CRYPTO SPELLS side will be after the maintenance on the CRYPTO SPELLS side (*Aug 29th update)


■ CRYPTO SPELLS → MyCryptoHeroes

Fight with CRYPTO SPELLS cards in MyCryptoHeroes!?

If you have the following CRYPTO SPELLS cards, you can use them as extensions in the MyCryptoHeroes world via the ETH network!

■ CRYPTO SPELLS: Gold: Moshobo
→ MyCryptoHeroes: Moshobo (Uncommon)

Skill name: Bird of love singing / Loving Bird’s Song (planned)

■ CRYPTO SPELLS: Gold: Vampire Road
→ MyCryptoHeroes: Vampire Road (Uncommon)

Skill Name: Immortal King (planned)

■ CRYPTO SPELLS: Gold: Minerva
→ MyCryptoHeroes: Minerva (Uncommon)

Skill name: Quinquatria (planned)


The procedure is the same for both heroes and extensions.

  1. On the CRYPTO SPELLS side, transfer the target card over the ETH network.
  2. On MyCryptoHeroes, go to “Inventory” from the “Market” or the menu on the upper right.
  3. Cards subject to the collaboration of CRYPTO SPELLS in your wallet will be displayed in “Collaboration“ in “Ethereum Network” in “Inventory”.* 1
    (*Aug 29th update)
  4. “Approve for all” is required for the first transfer.* 2
    (*Aug 29th update)
  5. When the process is complete, such as a few minutes, the button will be “converted”. If it does not appear after a while, reload it.(*Aug 29th update)
  6. Please execute “Convert”. (You need to pay a transaction fee.)(*Aug 29th update)
  7. When a transaction is executed, it is displayed in the “Etherem Network” tab.
  8. As with other heroes and extensions, you can transfer them to “CryptoWorld”.

* 1 Please follow the instructions on the CRYPTO SPELLS side for wallet transfer of crypto spell cards.

* 2 In preparation for transfer, execute “setApprovalForAll” in ERC-721 against the collaboration contract. Both hero and extension are required. Gas fee will be charged.

*The extension skills can be checked in the in-game pictorial book at the start.

*There is no upper limit to the number of conversions. All the issued numbers can be converted.

* After conversion, the minted NFT is treated as a normal NFT in all functions. Therefore, if you use a function that burns the NFT inside the game, such as EMA or Absorb, you also lose access to the CRYPTO SPELLS card that you used to mind the MCH NFT.(*Aug 29th update)

■ MyCryptoHeroes → CRYPTO SPELLS

If you have the following heroes, you can use them as cards in the CRYPTO SPELLS world via the ETH network!

■ MyCryptoHeroes: Uncommon: Andersen
→ CRYPTO SPELLS: Gold: The Little Match girl

Check the official Medium for instructions on the CRYPTO SPELLS side.

* To return to MyCryptoHeroes, transfer to the ETH network and operate on MyCryptoHeroes.
* There is no upper limit to the number of conversions. All the issued numbers can be converted.


CRYPTO SPELLS is Japan’s first TCG (trading card game) using blockchain. This is an online TCG for people with simple rules. Some of the owned cards are NFT (Non-Fungible Token) and can be traded on the Ethereum network. Cards are mined and new cards can be obtained.

CRYPTO SPELLS official website:

Let’s enjoy using each game item in each game!

About MCH + initiatives

This time, as one of the MCH+ initiatives, we have collaborated with CryptoGames Inc. which develops CRYPTO SPELLS(Blockchain TCG).

“NFT” is a digital asset only for you that jumps out of the world of one game app and plays an active part in various games.
It should be a collaboration that allows you to experience the NFT-connected experience, the “NFT-connected future”!

“MCH +” will continue to challenge various efforts to build a world where “NFT” can be more active with the aim of developing blockchain games.

— — — —

*The content of announcement is subject to change.

website :
discord :
twitter(EN) : @mycryptoheroes_

My Crypto Heroes|マイクリプトヒーローズ(マイクリ)

Crypto Game made in Japan. 日本初の本格ブロックチェーンゲーム


Written by

Project Manager at double

My Crypto Heroes|マイクリプトヒーローズ(マイクリ)

Crypto Game made in Japan. 日本初の本格ブロックチェーンゲーム

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