Boy, I have a feeling these things will get hated upon...
The Heart Medallion! So... From what I heard, hearts do not appear in the upcoming Hard and Elite difficulties. Carrying this item with you would cause them to have a chance of appearing there also increasing the amount in the other difficulties AND causing Health Pads to heal faster there. The catch is it expires every 30 days costing 260CE from the Supply Depot. I guess it could take up a Trinket Slot.
Q: Will less crowns/heat/stuff appear because of this "Medallion's" effect?
A: Nope, you will get the same Crown amount as normally. The Hearts will appear next to the other stuff.
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The Material Medallion! In need of Materials but all you get is crowns, heat, vitapods, and hearts? That's no longer the case with the Material Medallion! This medallion causes more Materials to appear but slightly decreases the other numbers. It's capable of letting you find 4 different 5* Mats from one red box in Stratum 6! (Altough very rare.. Like a Mewkat or something) It costs just 50-80CE and has a 30 day effect.
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The Mineral Medallion! Having Margrel's luck on getting huge minerals for yourself? Well then, The Mineral Medallion will sole your problems! It increases the chance of the first mineral you fully break in a depth to be a Big or Huge one. Why the first one? Because this could get abusive with Party Members. I imagine it costing 40-70CE. 30 days effect, yet again.
Note that these are made to fit in the new Drop System which I personally hate.
Not sure about them being Temporary Trinkets tough - maybe something like Heat Amps?
Honestly not much use for the material medallion. Perhaps, but I doubt it. Buying all the materials you need would be cheaper unless the BS update changes all that. Heart medallion sounds like Heart Attack from Seraphynx but with extra on Hard and Elite difficulties. The cost kinda cancels out what little use it has though, in my opinion. Mineral medallion I'll hold off on because the BS update will probably mess with that too. Overall, I like the concept though. And I know that this idea will be hated too, but since they're called medallions it sounds like they should be bought using prestige.