Community

Since the pixie currently has a whopping 3 feats, I decided to whip up a few more. None of these have been tested, and the whole lot were written in about 45 minutes.

Pixie Feats

Minute Infiltrator
Prerequisites: Pixie, trained in Stealth
Benefit: You can make a Stealth check to hide when you have partial cover, and you can use your allies as cover to remain hidden.
    In addition, if an enemy enters your space, you remain hidden from that enemy.

Swarming Assault
Prerequisites: Pixie
Benefit: While you are in an enemy's space and at least one ally is adjacent to that enemy, you and each ally adjacent to the enemy are considered to be flanking the enemy.

Aerial Dodger
Prerequisites: Pixie, rogue, Artful Dodger class feature
Benefit: Whenever an enemy misses you with an opportunity attack, you gain combat advantage against that enemy until the end of your next turn.

Arcane Adjustment
Prerequisites: Pixie, artificer, Augment Energy class feature
Benefit: When you use Augment Energy to infuse a weapon, you can choose to shrink or enlarge that weapon by one size category. The new size lasts as long as the weapon has a reservoir of energy. The weapon keeps its game statistics, such as damage dice and weight.

Captivating Cunning
Prerequisites: Pixie, bard, Virtue of Cunning class feature
Benefit: Whenever Virtue of Cunning would allow you to slide an ally, you can choose to instead slide the enemy which attacked that ally.

Darting Attack
Prerequisites: Pixie, rogue, Sneak Attack class feature
Benefit: Whenever you deal Sneak Attack extra damage to an enemy, you can choose to forgo dealing 1 die of that damage. If you do so, you can shift 1 square as a free action.

Enthralling Imposition
Prerequisites: Pixie, wizard, Orb of Imposition class feature
Benefit: When you use Orb of Imposition to designate a creature you have cast a wizard enchantment spell upon, the penalty imposed on that creature increases by 2.

Fae Enchantment
Prerequisites: Pixie, wizard, Enchantment Apprentice class feature
Benefit: When you hit a target with an arcane enchantment power, the target cannot gain combat advantage against you or make opportunity attacks against you until the end of your next turn. 

Mercurial Aura
Prerequisites: Pixie, bard, pixie dust racial power, skald's aura power.
Benefit: When you use pixie dust while your skald's aura is active, you can choose for the aura to emanate from the target instead of from you. This benefit lasts until the end of your next turn.

Mischievous Deception
Prerequisites: Pixie, wizard, Orb of Deception class feature
Benefit: Once per encounter as a free action, when you hit an enemy with a wizard illusion power, you can choose to expend your Orb of Deception. If you do so, the target is dazed until the end of your next turn. If the target is already dazed, it is instead stunned.

Prime Partner
Prerequisites: Pixie, ranger, Prime Shot class feature
Benefit: Choose one of your allies. You ignore that ally when determining who is nearest for the purposes of Prime Shot. You can choose a different ally whenever you take an extended rest.

Soaring Sneak
Prerequisites: Pixie, rogue, Cunning Sneak class feature
Benefit: Whenever you move more than 3 squares above the ground, you can make a Stealth check to hide as if you had concealment.

Swarming Archery
Prerequisites: Pixie, ranger, Archery Style class feature
Benefit: Once per round when one of your allies hits or misses an enemy with an attack, you gain a +1 bonus to ranged attack rolls against that enemy until the end of your next turn.

Swarming Blades
Prerequisites: Pixie, ranger, Two-Weapon Style class feature
Benefit: You gain a +1 bonus to melee attack rolls against any enemy that is adjacent to at least one of your allies.

Versatile Deception
Prerequisites: Pixie, bard, Deceptive Duelist class feature
Benefit: You gain the benefit of Deceptive Duelist with versatile weapons.