New Spells: Minor Hydromancies
This content can now be found at its most updated version in The Elements and Beyond, a free 246-page compendium that you can download right here, filled with 23 subclasses, 8 spellcasting feats, 134 spells, 213 spell variants, 85 monsters, 30 magic items, 4 races plus 12 new subraces each with racial feats, and even more goodies for both players and DMs!
Now we're getting into the elemental spells, as well as one of the travel spells!
Both Dive and Drown are new spells that appear on the list of Hydromancy Spells in the upcoming compendium. Hydromancer is one of the available spellcaster specialization feats coming in The Elements and Beyond, which each have their own list of 40-50 spells (including original and new homebrew spells) that count for the feat's special abilities, which activate upon casting a hydromancy spell. The hydromancy spell list for level 2 contains Conjure Ice Sculpture (new), Dive (new), Drown (new), Freezing Beam (a variant on melf's acid arrow), Ice Shards (a variant on scorching ray), and Snilloc's Snowball Swarm. These spell lists are designed such that a spellcaster should be able to choose anywhere between knowing only a few to knowing only spells from the matching spell list, depending on how they want to flavor and specialize their character.
As for the spells themselves, they need little explanation. 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. Dive (like Burrow and Soar) is based off the fly spell, but is more limited in its utility due to its natural environmental requirements and shorter duration, allowing it to have a lower spell level. Dive can be utilized in any fight with significant water to escape your enemies in the waves, or to send your rogue exploring in the flooded parts of those old ruins. It can even be utilized out of water just for the increase in breath-holding time.