Cool_Verniy
Just to give you an idea of what some of those characters are like

Nanoha's strongest attack, Starlight Breaker

Fate seconds from releasing her strongest attack,
Plasma Zanber Breaker

Hayate's SECOND strongest known attack (her strongest known is Diabolic Emission, but she has stronger moves she never uses) Ragnarok

Signum, and her weapon, the Sword of Flaming Steel, Levaetine

Nanoha's favorite attack, Divine Buster

Raising Heart, Nanoha's Intelligent Device, before its Exelion upgrade, (this is its Shooting Mode, optimized for long range bombardment spells)

Raising Heart Exelion,
In Shooting Mode, much more powerful,

Raising Heart Exelion,
In it's Final Drive configuration, Exelion mode. basically, at this point it's a miniature Death Star

Hayate Yagami, and Schwertkreuz, her Armed Device, the face on the left is Reinforce, the Blessed Wind (also the driving intelligence behind the Unison Device, The Tome of the Night Sky

Bardiche Assault, and Bardiche Zanber Form, basically the shaft of the axe becomes the hilt of a 15 foot greatsword