The Wilderness

You are aware that the Obelisk us magical. It's magic is currently dormant.
Usually, devices such as these require some kind of interaction to activate. It could have a password, it could have to be touched in a certain way. You're not entirely sure.

You examine the stone and it seems to be almost perfecly smooth and the colouration is perfectly even without a single blemish anywhere that you can see. You place your hand on the stone and you feel a jolt of pain shoot into your hand and up through your arm. You pull your hand away and see a perfectly formed bloody handprint remains on the obelisk. The red blood contrasting against the pure white stone. A few moments later you hear a voice in your head in your native language.
Greetings aspiring warrior. You blood is strong. If you think your ability matches your will then enter Aspirant. You will be tested. Survive and you will be granted the favour of the gods. Leave now and you will feel regret until the end of your days.

The painting is split into several pictures that span the entire wall. You can tell by the clothes and attire that each picture seems to feature the same lizard.

In the first picture the lizard seems to be fighting some strange beasts in some kind of arena. When it is victorious it approaches a stone pedastal in the center of the arena and places its bloody hand on a stone obelisk. There is an open door framing the image.

Then, the painting divides in half. In the top half of the picture, the lizard is swimming. In the bottom picture it is dodging streams of fire. At the end of both pictures is an open door.

In the third picture. it is confronting some kind of huge bone dragon with a massive mouth and a protuding tongue. The dragon like creature seems to be sitting in judgement. There is a pile of lizard like corpses next to the dragon but it seems satisfied with the lizard and it points towards another open door.

In the fourth picture, some kind of deity is handing the lizard what must be some kind of weapon. It's hard to say exactly what the weapon is. It's huge. It definitely requires two hands to wield. It could be either a sword or a club but the end of the hilt is shapped like some kind of spear. It is glowing green.

In the final picture, the lizard has joined countless other lizards who are all weilding the same glowing green weapons and they are battling a horde of undead creatures.