Capcom has a set of charms that look like stained glass of the Arch Tempered Elser Dragons with "+1 secret monster" for pre-order. : r/ MonsterHunterWorld
MHW: ICEBORNE | Razor Sharp Charm - How To Get - GameWith
Monster Hunter World: Iceborne X Monster Hunter Riders Collaboration Rewards Players With a Kirin Charm - Siliconera
Preparing for alatreon, I can't find ice attack charms (along with the res for it and both dragon) : r/MonsterHunterWorld