In case you've got RuneScape gold a range level of 70, then Kree'arra will come. In case you have a Power level of 70, then Graador will come. In case you've got a Prayer Level of 70, then Tsutsaroth will come. In case you've got a Hitpoint level of 70, then Zilyana will come. If you have all 4, then 1 of these will come randomly.
What's a minigame with no rewards? Well, it's just a minigame. After Kolodion sends out you once you conquer the God Renevant, then you will be in a place like the basement of the Mage Arena. Speak to one of these to get your reward. (do not worry, you can come back and find the others if you overcome the challenge again)
Should you speak to the man wearing the Armadyl Armour, you will get a Kree'arra Trophy and an Armadyl Bow. The trophy when rubbed, teleports you to the Armadyl region and enables you to be resistant to Armadyl enemies for 30 minutes. The Armadyl Bow looks like the crystal , just with the emblem of Armadyl. It's special shoots 5 arrows onto your oppnonent. After 5 turns, the arrows explode, causing huge damage.
Should you Speak to the man in Bandos Armour, you will get the Graador Trophy along with a Bandos Battleaxe. The Graador Trophy is similar to the Kree'arra Trophy, only it does exactly the Bandos part rather and provides you immunity for half an hour. The Bandos Battleaxe resembles a Dharok's Greataxe, only more historical. You hold it the same way. It's very havy, therefore every other turn you can attack. No special however.
Should you Speak to the man in the Saradomin Robes, He'll give you a Zilyana Trophy along with a Saradomin Shield. Again, the Zilyana Circle does exactly the exact same thing as the others, only it teleports you to the Saradomin component and provides you immunity for 30 minutes. The Saradomin Shield is NOT the Saradomin Kiteshield, it is much different. It looks like that the Symbol of Saradomin, just blue. It can heal half what you shield, such as the Godsword. But a negative side it, it degrades after each use, and cheap RS gold it could only be used 3000 times.