Wizard World (Harry Potter) vs Bloodthirster (40k)

This is set during book 5. The Bloodthirster spawns in knock turn alley. No prep and no knowledge of each other's abilities.

Scenario 1: Entire wizard world vs one Bloodthirster.

Scenario 2: Hogwarts gets a beta level psyker with knowledge of warp.

Scenario 3: Wizards get globally teleported to within 1 mile of spawn point and have 1 week prep time with full knowledge of the warp.