Question

I have my team as follows

1) Articuno (item-ice gem)
Movepool-icebeam,fly,sheercold, mind reader ( for a 100% 1move knock out)
2) Tyranitar (item- dark gem)
Movepool- earthquake,dark pulse,surf,stone edge
3)magmortar (item-electric gem)
Movepool- flamethrower,lava plume,thunder punch, eartquake

I easily manage till 19th battle of the battle subway but then i am defeated!!!
Please do suggest improvements
I know my team is weak to rock type. Please suggest and rate my team.

Answer 1

I can see a few starlight things that need changing staright of the bat.

1) Articuno:
Articuno is great with Mind Reader and Sheer Cold, but take out Ice Beam for Roost and Fly for U turn. There is a great set which will heal your Articuno when it uses Mind Reader.

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2) Tyranitar:
Tyranitar is always a Physical Attacker. Replace Dark Pulse for Crunch. Surf for Fire Punch. And Flamethrower for Stone Edge. This set will provide you maximum coverage and power.

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3) Magmortar:
Magmortar's set could be improved more. Replace Lava Plume with Brick Break and Thunder Punch with Thunderbolt. This is a mixed set perfect for the Battle Subway.

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Final Sets:

Articuno @Ice Gem

• Mind Reader
• Sheer Cold
• Roost
• U-Turn

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Tyranitar @Dark Gem

• Stone Edge
• Fire Punch
• Earthquake
• Crunch

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Magmortar @Electric Gem

• Flamethrower
• Brick Break
• Thunderbolt
• Earthquake

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Hope I helped :)