All tagged Transmutation
Though these spells work best for the Arcane Tricksters they were designed for, they can be used to great effect by many other sneaky characters or illusionists of various classes and builds. If you want to force-choke your foes, these spells are for you!
These three spells are focused on movement and mobility, a common theme for Aeromancers, and share a thematic unity with the fly spell that makes it easy to reconcile retraining. For example, a low-level storm sorcerer may make use of the swoop spell until he is high enough level to cast fly, and then retrain swoop to fly, flavored as the character becoming more skilled at aerial magic.
Sinking Maw resembles the also-5th-level spell maelstrom in some ways, and differs in others. The swirling liquefied ground doesn't deal damage over time, but can be much more confining and harder to escape from than swirling water. If you really want to completely smother your foes beneath the earth and you don't mind hitting only one target, Living Burial at 7th-level is what you're looking for.
Fist of Flame is intended to be a simple-to-understand single-target damage spell, fitting into the lineage of blight, harm, disintegrate, and finger of death. As an eighth-level spell, fist of flame gets to pack some debuffing power with its damage punch. Blood to Flame is both a new Pyromancy spell and a new Blood spell (what a fun venn-diagram!) you can use to torture your enemies as they die a gruesome death.
These spells do explicitly nonmagical physical damage, which leaves almost as many creatures resistant or immune to them as for fire damage, with fewer vulnerabilities. And that doesn't count temporary spells and effects such as stoneskin or gaseous form. This, combined with their other limitations in terms of needing suitable earth, affords them a bit of extra potential power in other situations.
Drown does exactly what it says, and is designed to be especially dangerous for enemy mages since it targets Strength and prevents most spellcasting by locking off verbal components and sight. Dive is one of many new travel-themed spells in the compendium, along with others such as glide, swoop, burrow, and soar.
This 9th-level spell shares some features with meteor swarm, such as its ability to deal high damage and its ability to damage objects in a wide area. Both spells will absolutely ruin a city district. However, gravity well is a concentration spell with the distinction of doing very little (just difficult terrain) until you start your next turn after casting.