I wouldn't let us suggest loot because we would just say some crazy **** I'd suggest you have a little speak with your staff to think of a fair reward but ima throwing something out there so you can get a general idea
Bronze key=Any single barrow's piece/random clue scroll/dragon boots/5k blood money
Silver key=random mage arena piece/higher chance to get hard cluescroll/crystal key
gold key=High chance to get elite clue/whip/tent/staff of dead/malediction+green one/random barrows pack
Plat key=Bandos piece/armardyl piece/bond/50k blood money/acb/high chance to get master clue/
Diamond key=Elder maul/ances/claws/tostd/prayer scroll/100kbm/instant master clue/250 dragon bolts unf thats just the top of my head. Thanks for taking a look
