Core Field

Core Field-
"The Earth shifts around the battlefield"
x1.5% boost to Rock type moves.
x1.3% boost to Ground type moves.
x1.5% boost to fire type moves.

0.5% decrease to Grass, Water type moves.

Ice Moves fail.

Ground and Steel type attacks gain fire subtyping.

The following moves are boosted by x1.5%-
Eruption, Earth Power, Flame Burst, Burn Up, Diamond Storm, Power Gem, Precipice Blades

Fissure's accuracy is boosted to 50%

Pokemon with the following abilities get a boost to Special Attack and are burned upon switchin-
Flash Fire, Blaze, White Smoke, Flare Boost

Pokemon with the following abilities get a boost to their physical defense upon switchin-
Flame Body, Magma Armor, Solid Rock, Rock Head, Sand Stream, Guts, Sand Veil, Sturdy

Burn damage is now 12% per turn.
Toxic damage now begins at 10% and slowly increases.

Smog causes Toxic Poisoning and increases in power by 2x.

Lava Plume now causes the opponent to be poisoned upon use.

Moves that may confuse after 2 turns of use now confuse after one turn of use.

Recoil damage is doubled.

Surf after 3 turns of use will transform this field into a Cave field, although the field can be reignited with Dig or 2 turns of Lava Plume.

Nature Power becomes Earth Power.
Secret Power has a chance to burn.

Telluric Seed raises Defense and Special Defense and confuses the user.