Every card in [chi] can be leveled up by sacrificing unwanted or Moogle cards to improve its stats, this can be done until it reaches its maximal level. The maximal level depends on the rank of the cards. For N it's 40, for N+ it's 45, for R it's 50, for R+ it's 55, for SR 60 and finally for SR+ 65. To strengthen the cards even further it can be "limit cut", which means fusing the card with a duplicate of this card or alternatively a Yen Sid card of the same rank (Yen Sid are available for R+, SR and SR+). Every time you limit cut a card its maximum level goes up by 5, the maximal number of available cuts is again depended on the rank, it's 4 limit cuts for N/N+/R/R+, 5 for SR and 6 for SR+ making the final maximum level for N 60, N+ 65, R 70, R+ 75, SR 85 and SR+ 95. When the card reaches its final maximum level it's called "high purified", it gets a rainbow background and another stat boost depending again on the rank of the card. Now I hope I haven't lost you yet because now it gets even more complicated.. A directory of KHInsider's images. Kingdom Hearts Unchained χ, and Kingdom Hearts Union χ (Cross). Goal is to have it done as soon as possible, . Kingdom Hearts χ[chi] Kingdom Hearts Union χ[Cross] Adventurer | Apricot Opera Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage-.