Here's why:
* It's a monster: All monsters on the field are subject to the effects of spells and traps, regardless of their ATK/DEF or special abilities.
* No inherent protection: The Five-Headed Dragon doesn't have any specific protection against traps or spells in its card text.
* Common targets: Its high ATK makes it a prime target for destruction or removal effects, and its multiple heads can be individually targeted by spells and traps.
Examples of spells and traps that can affect Five-Headed Dragon:
* "Torrential Tribute": This spell card can destroy all monsters on the field, including Five-Headed Dragon.
* "Mirror Force": This trap card can destroy all attacking monsters, including Five-Headed Dragon if it's attacking.
* "Solemn Judgment": This trap card can negate the activation of a monster's effect, including the special summoning effect of Five-Headed Dragon.
* "Heavy Storm": This spell card can destroy all spell and trap cards on the field, potentially removing support cards that protect Five-Headed Dragon.
Note: While Five-Headed Dragon is vulnerable to traps and spells, its high ATK and special abilities make it a challenging target. Skilled players can use its abilities to counter certain traps and spells, but ultimately, it's still susceptible to effects that can target monsters directly.