Abilities
Prudent Plow
Flavor: "This Pokemon plows double just in case, then reaps the benefits."
Competitive: It's Parental Bond, but it also affects Status moves, but it only affects move of one type. Autumn-type moves don't include Fake Out/Seismic Toss/Power-Up Punch clones to abuse, so this should be interesting. Also, as Beaf Cultist pointed out to me, Parental Bond stops affecting Future Sight if the user leaves the field, so this would too (this is relevant to Withering Breeze and Dormant Power).
Fluffy Float
Competitive: Wanted to sub an ability that takes advantage of fields. Bloopy already did abilities for Rose Field and Pumpkin Field, VoolPool did an ability for Rice Field, I'm doing one for Cotton Field. Perhaps somebody should do one for Sunflower Field.
Tropical Spirit
Competitive: There are so many moves to remove and/or prevent status and/or sunburn specifically, and 2 abilities that make Sunburn increase defenses, combined with Pokemon Legends Arceus's status-overhaul adding a stronger Sunburn to a real game, I felt like this ability made sense to be added. But hey, if people are scared of the ability and give it to something like Toxapex/Merciless, the Winter resist will be there so it's not completely useless.
Wave Crasher
Flavor: "Sea-type moves crash against this sturdy Pokemon, and are reversed like waves."
Competitive: Nerfed version of an ability from Extreme Roulettemons that I liked, which was AquaticPanic's Magic Master (Dancer+Flash Fire).
I think this could be very interesting because Sea has a 75% recoil move and 3 forced switch-out moves, so there are some mind games to explore. There's also a Quiver Dance clone to switch into, just like Dancer.