You can get resistence against X from potions and you find a lot of those in the game and they last until you rest.
Things are different because of Larians obsession with surfaces.
- If you miss with a fire arrow there will be a fire surface and the target takes damage and burns.
- If you attack a spider it will bleed poison and your melee char suddenly stands in a poison pool.
- I would bet that fire elementals will bleed lava.
I really hate this nonsense.
Jumping close to enemies should provoke AoO and not give advantage.
The game has several abilities that cause ground effects (grease, web, spike groth, . . .) so there is no need to add it to almost everything.

Prof. Dr. Dr. Mad S. Tist

World leading expert of artificial stupidity.
Because there are too many people who work on artificial intelligence already