Only level 4 and 4+ weapon with 4 variations for each. Variation are:
1st: Legendary, Hearts +, fin. Blow +, Special +, Hasty attacks, Reg. Attack +, Sp. Attack + and Focus Spirit +
2nd: same but Hearts + is replaced with Health +
3rd: Custom power of 650 with 5 star = 975 with Hearts +, Hearts...