Rhyolith by WoLkAn2

Passive: Rhyolith begins combat encrusted in thick Obsidian Armor, granting 50 Armor (reducing all damage taken by 50%), but reducing his Movement Speed by 15%.

Whenever Rhyolith casts an ability or steps on an active Volcano, he loses 10 Armor (down to a minimum of 0), but gains 5% Movement Speed per stack.

Active (Cooldown: 30s): Rhyolith reshapes his armor, instantly regaining 40 Armor and slowing himself accordingly.

Cooldown: 8s

Effect: Rhyolith violently smashes the ground, dealing moderate Fire damage in an area around him and slowing all enemies hit by 30% for 2 seconds.

Volcano Creation: The impact causes 2 Volcanoes to sprout from the ground nearby. Volcanoes act as small line-of-sight/pathing terrain blocks and last for 12 seconds.

ooldown: 10s

Effect: Activates the nearest Volcano. The Volcano erupts for 6 seconds, launching magma blasts at random enemies in range every 1.5 seconds.

Meltdown Effect: Enemies struck by magma blasts receive a stacking Meltdown debuff for 15 seconds (up to 5 stacks). Each stack increases all Fire damage taken by 5%.

Crater Interaction: If Rhyolith steps on an active Volcano, he crushes it into a Crater, sending a straight line of lava flowing outward. After 1.5 seconds, the lava stream erupts, dealing heavy Fire damage to anyone standing in its path.

Cooldown: 12s

Effect: Rhyolith blasts a cone of cinders and heat in front of him, dealing light Fire damage.

Summoning Mechanics:

If an Enemy Hero is hit: Summons 1 Spark of Rhyolith. The Spark chases the hit hero, emitting a pulse of Fire damage every second. Sparks gain 10% increased damage dealt and taken every 3 seconds (stacks up to 5 times).

If Minions/Monsters are hit: Summons 3 Fragments of Rhyolith. Fragments have low health and last 8 seconds; if not killed in time, they detonate, dealing damage equal to their remaining health to surrounding enemies.

Cooldown: 75s

Effect: Rhyolith slams the ground with immense force, fracturing the terrain and covering a large target area in boiling molten lava for 6 seconds.

Enemy Effect: Enemies standing in the lava take Fire damage every 0.5 seconds and are slowed by 25%. Enemies remaining inside the lava for longer than 2 seconds are rooted for 1.5 seconds.

Sinnergy: Rhyolith regenerates 2.5% of his maximum Health per second and restores 5 Obsidian Armor per second while standing on lava created by this ability.

Cooldown: 60s

Effect: Rhyolith shatters his Obsidian Armor completely, entering an ignited state for 8 seconds.

During this time, he gains 30% Movement Speed, his basic abilities cost no Mana, and their cooldowns are reduced by 50%. All of his movements leave a trail of fire behind him. When the effect ends, his Obsidian Armor is fully restored to 50.