From Riot’s patch notes here: Official Patch 3.10 Notes
We’re smoothing out Shard acquisition in The Path of Champions by introducing Wild Fragments:
- Wild Fragments can be used in place of Champion Fragments to unlock or Star Up any champion in The Path of Champions.
- When you earn Champion Fragments for a champion that exceeds the amount to get that champion to 3 Stars, you’ll instead earn an amount of Wild Fragments.
- Players who have already earned excess Champion Fragments will retroactively receive Wild Fragments.
- When you earn duplicate Relics that are clearly not useful (e.g. a fourth copy of any Relic, or a second copy of any keyword-granting Relic) you’ll get Wild Fragments instead. This also applies retroactively!
- Additionally, players can receive Wild Fragments from some Weekly and Daily Quests.
- Finally, we’re opening the option to spend Coins to unlock champions instead of Champion Fragments or Wild Fragments.