The best way to get this trophy is by having the x2, x4, x6, x8, 10 and Stud Magnet Red Bricks activated. Here are the locations of those Red Bricks:
x2 - Clock Tower
x4 - Slytherin Dormitory
x6 - Muggle Artifacts
x8 - Boys Bathroom
x10 - Potions Classroom
Stud Magnet - Quidditch Gate
Once activated, collect some studs in the levels and when full you will get True Wizard, do this on all 24 levels for the trophy!