From Halopedia, the Halo wiki
Wizard is a symmetrical map in a circular shape. It is a UNSC structure visually similar to the interior of the UNSC Pillar of Autumn and, given the presence of Threshold in the sky, may be located on the ship. There are two bases at opposite ends, a fair distance apart. Directly ahead of each base is a small platform, which contains the needler and the plasma rifle. You can also get on the platform by climbing and ascending the ramp. Then, if you jump, there is a central platform which contains two flamethrowers in the PC Edition. Each flag is protected by a slab of stone. To the right and left of the circular platform, there is an active camo, which is on the slab of stone, and an overshield, which is behind the slab.
Next to each flag, right above the ladder, there is a health pack. Below each base and between the platform next to the base, there are four grenades, either frag grenades or plasma grenades, depending on the base.