These items are themed after the mythological skulls (e.g., the Oak Cudgel for Hercules) but are available to all skulls in the game . Many include retroactive challenges that grant permanent passive bonuses upon completion, such as a 100% physical attack boost after defeating three bosses .
The DLC also adds over 20 new tiered items tied to these mythologies. This doesn't just benefit the new skulls; it creates new broken builds for older ones. For instance, the "Thunderbolt" inscription (introduced with Thor) allows even a basic Werewolf skull to trigger chain lightning. skul the hero slayer mythology pack verified