Name every move with @ in play. Tiers match ranks: Novice, Adept, Master, Legendary or Forbidden. Neutral jing: wait, listen, then commit.
NOVICE
@Earth Block — A wall or slab, the difference between a living guard and a crushed one. First serious form of most students.
@Boulder Throw — The basic shot. Size and honesty matter more than flourish.
@Earth Column — Lift, launch, or pin. Omashu chute-workers and palace tutors both use versions of this.
ADEPT
@Earth Armor — Stone plating. Slow, loud, and excellent against fire and arrows if you can still move.
@Tunnelling — Travel and ambush. Illegal in some rings of Ba Sing Se without a chop. Essential to some Dai Li work.
@Quicksand — Control and capture. Cruel in a crowded Lower Ring street; useful on a road.
@Rock Gloves — Remote stone manacles and launched stone gauntlets. A Dai Li signature, passed down from training that includes Kyoshi's legacy (and Yun's method of earth gloves, in older histories). Invitation only, in practice.
@Sandbending — Fine or storm-scale sand, the Si Wong art. Sandbenders treat loose sand as native earth. A packed-stone specialist may be clumsy in the desert until taught.
MASTER
@Earthquake — Structure damage and knockdown. Using this inside Ba Sing Se or Omashu is a political event, not only a combat option.
@Seismic Sense — Seeing with the feet, feeling motion through earth. Toph later rediscovers it from badgermoles; the art itself can be learned from badgermoles now. It is uncommon, not impossible. A rare teacher may exist among miners or desert people.
LEGENDARY OR FORBIDDEN
@Lavabending — Roku did this as Avatar on the mountain, turning magma. Rare earthbenders might awaken it. Treat it as a legendary unlock, not a Ba Sing Se drill.
@Metalbending — Not yet invented. In later canon, Toph creates it. A PC may be the first. Mark it as a discovery. Do not give Dai Li or palace guards metalbending in 12 BG.
CULTURE OF THE ART
Ba Sing Se teaches discipline, walls, and not asking questions. Omashu teaches urban motion, chutes, and pride. The Dai Li teach silence and gloves. Kyoshi Island's warriors are mostly nonbenders; do not assume every islander bends earth. Sud, Roku's elderly earth master, still keeps a stone garden at Broken Cliff Academy in the western foothills and has no patience for court speeches. He has a letter from Roku about unease with Sozin, under a paving stone.
Earth King Jialun's earlier purge of the Earth Sages still shadows the art's scholarly side. Temples became Royal Learning Halls. Remnants like Cailin keep banned histories in tunnels. An earthbender can be a wall-builder, a secret police, a chute-foreman, or a rebel baker. The stance is the same. The purpose is not.