[ADDITIONAL COMMENTS]
<p>The choice of item really boils down to how afraid of Conkeldurr you are. Keep in mind, however, that even Guts-boosted Mach Punch from Conkeldurr with an Attack-boosting nature and 252 Atk Evs does a maximum of 94% to Hydreigon without Chople Berry, and Hammer Arm from the same Conkeldurr will OHKO Hydreigon through Chople Berry 87% of the time, even with no prior damage. These decisive outcomes puts the usefulness of Chople Berry in question.</p>
<p>Hydreigon makes a good partner for Jellicent, forming the famed "SazaJelly" combo. They complement each other well offensively, and have great synergy, considering Hydreigon's ability to give Jellicent back 25% of its health each turn with Surf. Jellicent is also a deterrent to Trick Room by being slow and bulky, while also being able to set up Trick Room if the opposing team tries to use
Sand Throw, Tailwind, or Swift Swim to gain the Speed advantage over Hydreigon.</p>
