As usual, this mod requires Stracker's Loader to work.
Take note that the HR Coins quests come with 3 carts, while the MR Coins quests come with 5 carts*. These quests mostly share the same rewards as their Arena counterpart. They are meant to provide solo means of getting MR Arena Coins for players who've reached the Guiding Lands, hopefully in a more enjoyable manner. All of the MR quests feature tempered versions of their respective arena monster, with only some differences. I'd recommend against attempting the MR Coins quests without a proper set for your weapon of choice.
This mod includes 10 quests (6 from MR Coins pack, 4 from HR Coins pack) that corresponds with the HR/MR Arena monsters.