All tagged Radiant Damage
Today's spells are Hydromancy spells, which means that they appear on the spell list for the new Hydromancer feat in the compendium, and they thus activate the feat's special abilities. These feats are designed, among other things, to unify thematic concepts that can stretch across multiple damage types, making other forms of conventional specialization (such as damage type synergies) less resonant for these things. Steam spells are a great example, as they deal fire damage but they appear on the Hydromancy spell list (which also contains spells that deal bludgeoning damage, cold damage, and more) and not on the Pyromancy spell list (also new in the compendium), which doesn't necessarily contain every spell that deals the fire damage type.
Stockade Sprouts is an environmental spell that creates temporary trees out of nothing to trap your foes in. Since it lasts up to an hour and only deals damage to targets who struggle, you can use it as the name implies -- a prison. The trees can also be used for cover to hide behind or higher vantages to climb to. Meanwhile, Sun Flower offers a stationary but long-lasting and versatile magical cannon in the form of a spectral flower blasting sunlight.
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.