Nahiri, the Lithomancer
Strength — Melee

Marble Spear (Q)
Throws a spear in a straight line, dealing physical damage and reducing armor of anyone struck.

Seismic Tremors (W)
Creates unstable footing in an area, dealing physical damage and inflicting a stacking debuff that reduces movement speed. The area of effect slowly spreads in a ring formation. You may cast this skill globally within the range of a Hedron.

Esoteric Inventory (E)
Increases your number of inventory slots. Each slot is equipped with with an Enchanted Ore, increasing your damage and mana regeneration. Activating this skill creates a defensive shield which blocks a portion of damage from attacks, lasting longer for each Enchanted Ore equipped.

Hedron Network (R)
Creates a Hedron on your current position. The Hedron has clearvision and provides a small amount of experience from nearby dying enemies to Nahiri. Attacking the Hedron destroys it. It counts as a structure (and can be teleported to or protected with Glyph.)
Aghanim's Scepter: Increases your maximum Hedron capacity and causes them to fire at nearby enemies.

Kiora
Intelligence Ranged

Squid Bolt (Q)
Launches a squid that attaches itself to the first target hit. The squid deals damage over time, reduces their vision range and removing any vision they gain from allies. The squid may be attacked.

Crashing Wave (W)
Launches a wave in the target direction, dealing damage and pushing back struck enemies. Creates a temporary puddle of water.

Aquamancy (Passive)
Kiora gains increased movement speed and mana regeneration while standing in water and for a short duration afterwards.

Whirlpool (R)
Summons a massive whirlpool at the selected area, slowing down and dragging enemies affected towards the center. If an enemy hero reaches the center, the whirlpool explodes into a temporary puddle of water, dealing damage, pushing back and stunning all enemies within.
Aghanim's Scepter: After the whirpool explodes, an underwater behemoth is summoned under Kiora's control, dealing heavy damage and leaving behind trails of water.

Sorin
Ranged Intelligence
Short range abilities with low cooldown

Swarm of Bats (Passive)
Summons a Bat familiar each time you cast a spell. The Bat will lash out at nearby enemies. The attacks remove both health and mana, restoring it to Sorin. The Bats dissipate after 3 attacks or if you exceed the limit. Toggle to only hit heroes.

Feast of Blood (Q)
Deals magic damage to a target, restoring health to Sorin. Leaves a temporary mark, causing physical attacks against the target to deal additional damage and restore health. Bats will prioritize the marked target with increased attack range.

Darkness (E)
Creates a magical area of darkness that obstructs vision. Enemies inside are silenced and have a chance to miss attacks.

Dominate (R)
Take control of target hero for a short duration, causing it to uncontrollably attack its allies.
Aghanim's Scepter: Increases the duration, but makes it into a channeled spell.

Ob Nixilis
Strength Melee

Death Pulse (Q)
Deals magic damage to yourself and all enemies in a cone.
Dark Transformation 1: Affected enemies are dealt additional damage over time.
Dark Transformation 2: Affected enemies have temporarily slowed movement and attack speed.
Dark Transformation 3: Affected enemies are temporarily silenced and muted.

Demonic Pact (W)
Places a curse on target hero, dealing magic damage over time and restoring mana.
Dark Transformation 1: You gain clearvision around the target.
Dark Transformation 2: Demonic Pact heals friendly targets and destroys mana from enemy targets instead.
Dark Transformation 3: Demonic Pact bounces to nearby targets on application.

Unearthly Barrier (E)
You gain a protective shield for a short duration, absorbing incoming damage. When the buff expires, you restore health equal to an increased amount of the shields remaining health.
Dark Transformation 1: The expiration also damages nearby enemies based on the shield's remaining health.
Dark Transformation 2: The shield grows in power while it lasts.
Dark Transformation 3: You gain magic immunity for the duration of the shield.

Dark Transformation (Passive)
You gain demonic powers as you become closer to death. Each threshold grants damage reduction and additional benefits to your spells.
Level 1: You become even stronger when you are below 75% health.
Level 2: You become even stronger when you are below 50% health.
Level 3: You become even stronger when you are below 25% health.
Aghanim's Scepter: If you would die, you remain alive at 0 hp and become immune for a short duration before dying.