[The Envenomed Kiss]

First off, though this is a guide of sorts I DO NOT claim to know everything about this mastery. This is meant to be a statistical guide to help you choose a mastery or better yourself at one.

Earth Mastery
+90 Intellect
+48 Dexterity
+720 Health
+192 Energy
(Completed @ 32 Mastery points)

-Damage Spells-

Flame Surge: Probably the most underlooked skill in the game, though the only skill that doesn't need -recharge gear to achieve -100% recharge

It starts off looking like...
Flame Surge
37 Energy Cost
3 Projectiles
8-15 Fire Damage

And at Rank 12...
Flame Surge
75 Energy Cost
3 Projectiles
43-59 Fire Damage

And at Rank 12, with Barrage at Rank 8...
Flame Surge
75 Energy Cost
3 Projectiles
-100% Recharge
80% Chance to Pass Through Enemies
43-59 Fire Damage
66 Burn Damage over 3 Secs

And at Rank 12, with Barrage at Rank 8, and Flame Arch at Rank 12...
Flame Surge
109 Energy Cost
6 Projectiles
-100% Recharge
80% Chance to Pass Through Enemies
66.65-91.45 Fire Damage
102.3 Burn Damage over 3 Secs

And at Rank 12, with Barrage at Rank 8, Flame Arch at Rank 12, and Earth Enchantment at Rank 12...
Flame Surge
109 Energy Cost
6 Projectiles
-100% Recharge
80% Chance To Pass Through Enemies
109.65-150.45 Fire Damage
168.3 Burn Damage Over 3 Secs

This skill isn't really that powerful but it's fast. Kinda like an automatic shotgun at close range.

Volcanic Orb: Very Spammable, and very deadly with it's synergies. It's just kinda slow..

It starts out looking like...
Volcanic Orb
64 Energy Cost
2.5 Meter Radius
18 Damage
22-54 Fire Damage

And at Rank 12...
Volcanic Orb
108 Energy Cost
2.5 Meter Radius
55 Damage
91-128 Fire Damage

And at Rank 12, with Conflagration at Rank 8...
Volcanic Orb
128 Energy Cost
3.0 Meter Radius
55 Damage
91-128 Fire Damage
48 Burn Damage Over 3 Secs

And at Rank 12, with Conflagration at Rank 8, and Fragmentation at Rank 12...
Volcanic Orb
154 Energy Cost
3.0 Meter Radius
55 Damage
91-128 Fire Damage
48 Burn Damage Over 3 Secs
Orb Fragments (7-13 Fragments)

Each Fragment Deals...
126 Damage
59 Fire Damage
1.5 Secs of Stun

And at Rank 12, with Conflagration at Rank 8, Fragmentation at Rank 12, and Earth Enchantment at Rank 12...
Volcanic Orb
154 Energy Cost
3.0 Meter Radius
55 Damage
182-256 Fire Damage
96 Burn Damage Over 3 Secs
Orb Fragments (7-13 Fragments)

Each Fragment Deals...
126 Damage
118 Fire Damage
1.5 Secs of Stun

And at Rank 12, with Conflagration at Rank 8, Fragmentation at Rank 12, Earth Enchantment at Rank 12, and Brimstone at Rank 8...
Volcanic Orb
154 Energy Cost
3.0 Meter Radius
66.55 Damage
182-256 Fire Damage
292 Burn Damage Over 3 Secs
Orb Fragments (7-13 Fragments)

Each Fragment Deals...
152.46 Damage
118 Fire Damage
98 Burn Damage Over 3 Secs
1.5 Secs of Stun

Eruption: The big boy in the Earth line, this basically just summons a mini volcano to pummel your foes for six seconds.

It starts off looking like...
Eruption
95 Energy Cost
6 Sec Duration
3.0 Meter Duration
2-3 Fragments
31 Damage
28-33 Fire Damage

And at Rank 12...
Eruption
123 Energy Cost
6 Sec Duration
3.0 Meter Radius
5-6 Fragments
98 Damage
95-112 Fire Damage

And at Rank 12, with Earth Enchantment at Rank 12...
Eruption
123 Energy Cost
6 Sec Duration
3.0 Meter Radius
5-6 Fragments
98 Damage
190-224 Fire Damage

And at Rank 12, with Earth Enchantment at Rank 12, and Brimstone at Rank 8...
Eruption
123 Energy Cost
6 Sec Duration
3.0 Meter Radius
5-6 Fragments
118.58 Damage
190-224 Fire Damage