Jensen, the Grand Harpy

Jensen, the Grand Harpy is a Pre-Hardmode boss intended to be fought after Skeletron has been defeated.

Spawn
Jensen, the Grand Harpy is summoned using the Feather Talisman at night anywhere in the world.

Behavior
Jensen, the Grand Harpy follows the player with high speed.

First Phase

 * She will alternate between shooting green fast-moving feathers and ramming the player.
 * Feathers do not travel through blocks.
 * She will attempt to ram the player four times.
 * At 50% life, she will become invulnerable and she will enter her second phase.

Second Phase

 * Feathers shot in this phase are faster, glow, deal more damage, and travel through blocks.
 * In her first three charges, she leaves behind a trail of feathers that will fire toward the player at high speeds.
 * At around 25% life she will begin to throw her boomerang, which rapidly homes in on the player and upon contact explodes into multiple feathers.

Tips

 * Build an arena in the sky using two rows of platforms, it allows better movement, and a higher chance to dodge her attacks, and prevents her from going underground if she charges downward, which will prevent you from hitting her.
 * Long-range attacks can easily take care of Jensen. Melee class-users that may not have as many long-range options may want to use a Yoyo, such as Amazon, or a sword with a projectile, such as Enchanted Sword.

Trivia

 * Jensen, the Grand Harpy's theme is Winged Wrath, which was composed by the artist Turquoise.