Swordstrike Warrior

[Fire Fist Moralltach]

 

When this card is Summoned: Target  1 Xyz Monster you control that has Xyz Materials attached to it; Special Summon 1 of its Xyz Materials then attach this card to that Xyz Monster. You can only gain this effect once per turn. Monsters that used this card as Xyz Materials lose 500 ATK

[Atypical-Abbie]

An interesting little card here. It's Level cannot be easily abused in Rank 4 Decks like tellarknights, so that's good, so if you're gonna use it, it's gonna be as a tech card. As it's mandatory, which might be for the better since you can't just Summon this at all times, even though that is unlike you would want to do that. Making it lose 500 does also balance any OTK combos with the monster you just Summoned, especially in Decks that make the Materials easy to Summon, but reduce their ATK/DEF or other things. While it might not be used in all forms of Xyz Monster Decks, I can see it being useful in some.

[Fire Fist Moralltach]

An interesting little card here. It's Level cannot be easily abused in Rank 4 Decks like tellarknights, so that's good, so if you're gonna use it, it's gonna be as a tech card. As it's mandatory, which might be for the better since you can't just Summon this at all times, even though that is unlike you would want to do that. Making it lose 500 does also balance any OTK combos with the monster you just Summoned, especially in Decks that make the Materials easy to Summon, but reduce their ATK/DEF or other things. While it might not be used in all forms of Xyz Monster Decks, I can see it being useful in some.

So, losing 500 ATK is OK.

I thought it wouldn't be enough. Thanks for comment.