[3.5]help me with a timed challenge! (a maze)

[Gandariel]

So in the next session my players will have to pass a test to get an item.
Can you help me invent it without being too much clichèd?
For info, the party(all level 4)
is composed of:
-Bard
-Druid
-Barbarian
-Factotum

I'm thinking of making a time challenge, like a maze

[Gandariel]

sad bump is sad.

Also i've been thinking:
I'm probably gonna throw them in a maze, and they have to escape in a finite amount of time (say 5 minutes)
It will have several "portals" which may lead ahead or drag you back at the beginning.
AND monsters. definitely monsters.

how about it?

And don't worry about "who on earth would do this? portals? "
it's a part of the story, there's this order of ancients warding a sacred.. well, don't worry about why would someone build this strange maze