Saquael, Herald of the Sky - [02.2017META SAVIOR]

[BatMed]

3 Level 5 Fairy-Type monsters
You can also Xyz Summon this card by using a Rank 4 LIGHT Fairy-Type Xyz Monster you control as the Xyz Material. (Xyz Materials attached to that monster also become Xyz Materials on this card.) Monsters cannot be Special Summoned from the Graveyard. At the start of the Damage Step, if this card battles a monster with 2000 or less DEF: Banish that monster. If this card is destroyed and sent to the Graveyard: You can Set 1 Counter Trap directly from your Deck.

Technically the easiest obvious choice to bring this one is Minerva. Now let's talk about it:
It's a floodgate that will stop Infernoids, Snow, Norden, Mezuki, etc... and it's a construct against weakling DEFs, such as ALL THE ZOODIACS. yay/nay ?
 
EDITS:
- ATK reduced from 2750 to 2500.
- Float effect don't miss timing.

[Darj]

There is also Fairy Cheer Girl, and this greatly patches up its average 1900 ATK.

I'm fine with the effects, to be honest. What I'm not fully convinced about is its ATK, a bit too high IMO for an Xyz-Evolution from a Rank4, and a generic option at that in Minerva, with no other drawbacks like a MP2 requirement (e.g. Downerd) or a 1-turn effect stun (e.g. Ptolemy M7). I would prefer it with 2400~2500 ATK or so. Also, making its float effect to not miss timing would be welcomed.

[BatMed]

There is also Fairy Cheer Girl, and this greatly patches up its average 1900 ATK.

I'm fine with the effects, to be honest. What I'm not fully convinced about is its ATK, a bit too high IMO for an Xyz-Evolution from a Rank4, and a generic option at that in Minerva, with no other drawbacks like a MP2 requirement (e.g. Downerd) or a 1-turn effect stun (e.g. Ptolemy M7). I would prefer it with 2400~2500 ATK or so. Also, making its float effect to not miss timing would be welcomed.

updated as suggested