Move Relearner

[Vienne]

Hello, I have a question. I don't know where to post this one so I just decided to post this in this section. So, why can't my Cloyster relearn Ice Shard via the Move Relearner?

 

[Nexus]

This isn't the right section use this thread http://www.smogon.com/forums/thread...answers-xy-style.3489794/page-46#post-4946048 in the future, and the reason it can't learn it is because only shellder gets Ice Shard, cloyster doesn't.