They have access to the Surges of Adhesion and Gravitation. The combination of these two Surges results in three separate powers which are known as the Three Lashings. Windrunners exemplify the virtues of Protection and Leading. 

Honorspren

When you chose this Order at Level 3, you learn the Find Familiar spell and always have it prepared. Casting it does not use a spell slot. Your familiar appears invisibly to everyone but you.

Lashing

At 3rd level, you gain a flying speed equal to your walking speed. You gain the following abilities:

Gravitation: As a bonus action, you may touch one creature. The creature must succeed on a Constitution save equal to 10 plus your Fighter level, or be immediately moved 15ft in any direction of your choosing.
Adhesion: As a bonus action, you may touch one creature. The creature must succeed on a Constitution save equal to 10 plus your Fighter level, or be stuck to an object or area of your choice within 5ft of it. This adhesion lasts for one minute, or until the creature removes the adhesion using an action
Reverse Lashing: As a reaction, you may use your powers to try and deflect a ranged attack made against you. Roll a d4 and subtract the result from the attack roll. You can do this after the DM determines if the attack fails or succeeds, but before damage is calculated.

Nahel Bond

At 7th level, your Nahel Bond allows you to form weapons. Your spren can transform into any weapon in which you have proficiency. This transformation happens instantaneously, and does not require an action. The weapon is considered magical and gets a +1 bonus to attack rolls and damage rolls.

Shardplate

At 10th level, your Nahel Bond allows you to create a suit of magical armor. This armor may surround you as a reaction and grants a +5 bonus to AC until the start of your next turn. Additionally, you may use this reaction to form the suit of armor on a willing creature within 30ft of you. When the armor takes damage, it deals 1d6 radiant damage to any creature within 5ft of it. 

Master of Surges

At 15th level, your fly speed is increased to 60ft. You may use a reaction to move 15ft in any direction. While flying, you gain advantage on all melee attack rolls. 

Fifth Ideal

By 18th level, you cannot be charmed, frightened, or surprised. You gain resistance to all necrotic and psychic damage. You may treat any damage you would deal as radiant damage. If you would gain a level of exhaustion, once per long rest you may ignore its effects.