Critical Role: Vox Machina Origins II #4
Step one: find a nymph heart.
In order to save Grog, Vox Machina splits up to find the rare ingredients that will stop the lich Drath Mephruhn from returning. But nymphs are dangerous, scarce, and not particularly fond of giving up their hearts to adventurers, so the odds aren't good for Vex, Vax, Trinket, and Grog as they enter the wintery Frostweald in search of the only nymph left in Tal'Dorei. But hey, since when have poor odds stopped Vox Machina?