Reaper xyz (To be continued)

[jellal17]

 

2 level 4 "DARK" monsters

At the start of the Damage Step, if this card battles a non-DARK monster: Destroy that monster.Once per turn, you can detach 1 xyz material from this card to remove one card in you're Graveyard to, Target 1 card on the field and destroy that target.

 

[Trebuchet MS]

2 Level 4 DARK monsters

At the start of the Damage Step, if this card battles a non-DARK monster: Destroy that monster. Once per turn: You can detach 1 Xyz Material from this card to remove and banish 1 card in your Graveyard, to, then target 1 card on the field; and destroy that target.

We can already see that this is a better Catastor due to it having a similar effect with something else tacked on and better ATK. While the DARK monster requirement may seem to offset this, being a Rank 4 Xyz makes it a little more spammable than Catastor itself in certain Decks.

 

I would change its Rank - perhaps to 5 - to make it a little less easily Summoned without dedication so that it's not immediately superior to Catastor.