Glaciate or Ice Beam on Kyurem?

Question

I don't know if I should take the standard 95 base Ice Beam, or get a speed reduce with Glaciate and 65 base. My Kyurem has 265 Speed btw, so I don't know if either would help or not.

Answer 1

Ice Beam is almost always Kyurem's better option, no matter the format. It's a much stronger move, allowing Kyurem to threaten Pokémon that would otherwise enjoy switching in on it.

Glaciate is suggested in a couple of Kyurem's 1v1 sets, but note it's never Kyurem's only Ice STAB. It can be useful for breaking Focus Sash and revenging faster opponents after the Speed drop, but this is about where its utility ends: Ice Beam and Freeze-Dry's raw damage are what Kyurem prefers.
Kyurem (Smogon)

Answer 2

I would Actually say to go with Glaciate Here,

One of our Top users Trachy posted this set,

Kyurem @ Expert Belt

Trait: Pressure

EVs: 4 HP / 252 SAtk / 252 Spd

Timid Nature (+Spd, -Atk)

Glaciate
Dragon Pulse
Shadow Ball
Hidden Power [Electric]

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And as usual I had to think about it, but for him to do real Sweeping Glaciate makes him fast enough, or it will just force a switch which is always nice.

And once again, That set was Trachy's