Chaos Xyz Summon mechanic for Psychic Xyz Monsters, considering there aren't that many :/

[Lonk]

Devoid Mental Seraph

Rank 5

LIGHT

Psychic/Xyz/Effect

ATK 2800/DEF 2500

 

3 Level 5 LIGHT monsters

You can also Xyz Summon this card by using a Psychic-type Xyz monster you control as the Xyz Material.  (Xyz Materials attached to that monster also become Xyz Materials for this card.)  Once per turn:  You can detach 1 Xyz Material from this card and send 1 monster from your Deck to the Graveyard;  Both players must pay 500 Life Points for each face-up monster on the field.  If this card has a material that was originally a Psychic-type Xyz monster, you do not pay the Life Points.  This effect cannot be used during the turn this card was Summoned.

[UltimateIRS]

This card is rather poorly designed, really. It can be made with 2 Level 2s or 3s (Armor Kappa and OOPArts Crystal Alien, respectively, both of which are generic), has 2800 ATK, does as a cost what one normally requires activating Foolish Burial to do (it being a cost means it still works over negation), and can potentially inflict pretty heavy damage without it being treated as damage. The inability to use the effect the turn it's summoned helps, but it's still too much raw power for how easily it's summoned.