Addicting Games: DoTa heroes-The Crystal Maiden

Adept in the manipulation of frost and ice, Rylai is the very image of elegeance and grace. Trained by a renegade wizard deep in the heart of Winterspring, Rylai brings to the Sentinel her prowess in the arts of magic. With a vast arsenal of spells, she wreaks havoc upon her foes - be it with powerful blasts of frost to send them fleeing in panic, or be it by rendering them immobile in ice. Her foes tremble in fear as the ground beneath implodes in mighty novas of frost in a dazzling array, obliterating all who dare oppose her.

Frost Nova (V)
Blasts enemy units around a target enemy unit with a wave of damaging frost that slows movement and attack rates for 4 seconds. Units within 300 AoE of the main target will take the nova damage and will be slowed.
Level 1 - 50 target damage and 75 nova damage.
Level 2 - 100 target damage and 100 nova damage.
Level 3 - 125 target damage and 125 nova damage.
Level 4 - 175 target damage and 125 nova damage.
Mana Cost: 125/ 150/ 170/ 190
Cooldown: 9

Frostbite (E)
Freezes the target in a case of ice, prohibiting movement and attacking. Deals 70 damage per second.
Level 1 - Lasts 1.5 seconds.
Level 2 - Lasts 2 seconds.
Level 3 - Lasts 2.5 seconds.
Level 4 - Lasts 3 seconds.
Mana Cost: 115/ 125/ 140/ 150
Cooldown: 12

Brilliance Aura (R)
Gives additional mana regeneration to all friendly units.
Level 1 - Adds 0.6 mana regeneration.
Level 2 - Adds 1.2 mana regeneration.
Level 3 - Adds 1.8 mana regeneration.
Level 4 - Adds 2.4 mana regeneration.
Mana Cost: N/A
Cooldown: N/A

Freezing Field (Z)
Causes many random icy explosions in an area of 600 AoE surrounding Rylai. Lasts 3 seconds.
Level 1 - Each explosion deals 105 damage.
Level 2 - Each explosion deals 170 damage.
Level 3 - Each explosion deals 250 damage.
Level 4 - Each explosion deals 310 damage.
Mana Cost: 300/ 450/ 600
Cooldown: 90/ 75/ 60