Crystal Maiden

Try to hit both opponents with Crystal Nova and potentially secure the range creep at the same time.

Consider skilling Frostbite on level 2 for a kill attempt with your mana regen consumables.

Frostbite lasts longer on the creeps. Use it to farm big neutral creeps or enemy summons.

Crystal Nova provides vision so you can use it to scout pillars for wards and Roshan pit.

It is hard to land an impactful Freezing Field and it costs a lot of mana so you might want to delay skilling it.

Avoid showing yourself at the start of the fight. Keep distance and spam Crystal Nova, Frostbite, and use items.

Dont rush with using Freezing Field in fights unless you can support it with Glimmer Cape.

Use portals to roam around the map and set up kills with your control spells.

Get Aghanims Shard at the 15 minute mark as it gives you more mobility, lockdown and wave clear.

Crystal Maiden counters heroes that don't like to be rooted such as Ember Spirit, Void Spirit and Storm Spirit. Note that Frostbite is long-lasting and has a short cooldown.

Crystal Maiden is a vulnerable hero and one of the easiest to kill during the laning phase

Play on different sides of the lane with your coleague against Crystal Maiden such that you don't get hit both by Crystal Nova

Use moments when Crystal Maiden is away from her laning partner to land a kill on her, for example when she's pulling. Keeping her on low levels means that her team won't have high levels of Arcane Aura

Look to interrupt the Crystal Maiden Freezing Field in fights. She will try to protect herself with Glimmer Cape or BKB

Crystal Maiden's level 20 attack speed talent is good against specific heroes or abilities such as Supernova, Tombstone and Will-o-Wisp