Hmm, looking at your team, I feel like it could make good use of a sandstorm, since Alakazam has Magic Guard, and Palossand appreciates the extra HP gained in a sandstorm from Shore Up. You have no way to remove hazards as well, so why not a Tyranitar + Excadrill combo? If you don't want to use Sand Stream, Excadrill learns both Rapid Spin and Stealth Rock, and even though a Choice Scarf + Mold Breaker set would work better, a Focus Sash is usuable due to its rather mediocre defenses.
Excadrill @ Focus Sash
Ability: Mold Breaker
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Earthquake
- Iron Head
- Stealth Rock
- Rapid Spin
Another option is Ferrothorn, which can set up both Stealth Rock and Spikes, plus it's bulky, so it has a good chance of setting up a couple of layers of Spikes.
Ferrothorn @ Leftovers / Rocky Helmet
Ability: Iron Barbs
EVs: 252 HP / 196 Def / 60 SpD
Impish Nature
- Stealth Rock
- Spikes
- Thunder Wave / Leech Seed
- Knock Off
I'll explain the set a bit. Leftovers are for recovery. Rocky Helmet is if you would prefer to punish physical attackers greatly with Iron Barbs. Stealth Rock and Spikes are for entry hazards (duh, that's the point of this answer lol). Thunder Wave supports the team on the Leftovers set, and Leech Seed is for recovery on the Rocky Helmet variant. Knock Off removes items, which is good for item reliant Pokemon.
Klefki can set up Spikes, as well as dual screens, all with +1 priority (Prankster), though it's in RU, unless you're not too worried about that.
Klefki @ Light Clay
Ability: Prankster
EVs: 252 HP / 136 Def / 120 SpD
Bold Nature
IVs: 0 Atk
- Spikes
- Light Screen
- Reflect
- Foul Play
Finally, there is Toxapex for Toxic Spikes (oh, also, to annoy your opponent out of their mind, if you're into that kind of play :P).
Toxapex @ Black Sludge
Ability: Regenerator
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Toxic Spikes
- Haze
- Recover
- Scald
Fun set to use.
If you want more suggestions, just tell me.
Hope this helps! :)