Banish "Space-Time Police". "Psi-Beast" becomes Level 5. Use "Brain Hazard" to Summon "Police" and activate its effect, banishing a card your opponent controls. Overlay "Beast" and "Police" for a Rank 5Xyz Monster. The card banished by "Police" remains banished.
This card can be Special Summoned from the Graveyard with "Telekinetic Power Well", but its effect will not activate.
If you can't use this card as Synchro or Xyz Material immediately, you can keep its weak attack from hindering you in a variety of ways:
Using this card, you can banish a Level 3 Psychic-type monster from your deck to make "Psi-Beast" Level 3.
Then, you can use "Psi-Beast" and another Level 3 Monster to Xyz Summon "Leviair the Sea Dragon" and use its effect to special summon the previously banished monster.
Using this combo, you can essentially turn "Psi-Beast" and another Level 3 Monster into a "Leviair" and any Level 3 Psychic-type monster you want (such as "Hushed Psychic Cleric" or "Serene Psychic Witch") for even more combos later on.