The only downside to them is theyre often expensive to activate and die to Fatal Push or get locked out by Pithing Needle
Their pricing reflects real secondary market values, so even if youre not buying immediately, youll learn a lot about what different cards are actually worth far more useful than guessing from social media posts
Plus, you can always replace some tapped utility lands with MDFCs to keep the total number of tapped lands in check
The ceiling just gets higher after that, as she is no doubt a part of a lifegain strategy
However, for those that demand other Xyz Monsters for their standard materials (and not for Xyz Evolution), the relationship with their Ranks is inconsistent: Only the Rank 7 "Disaster, Dragon Ruler of All Apocalypses" requires monsters of its same Rank
If an "Eyes Restrict" Fusion Monster(s) or a "Relinquished" is Special Summoned: Add this card from your GY to your hand (this is not optional)