I've been mostly following the standard "earth resist vs slow, fire resist vs virus" etc. The magian elemental weapons are a good indicator of what XXXXDown and stat down effects go with what element.
Eg.
A fire sword gives str/attack.
Fire is weak to water.
So water lowers str/attack.
Use sulpor to resist these. Beetles "Spoil" tp move is a good example to test on.
A wind sword gives agi/eva.
Wind is weak to ice.
So ice lowers eva/agi.
Use Ignis to resist these. Bats or lizards for Infrasonics is a good example to test on.
Etc. Etc.
I made this table:
Rune | Increases Resistance Against | Other Effects |
| AGI Down, Evasion Down | Paralyze, Bind, Frost |
| MND Down, Magic Def Down | Stun, Shock |
| INT Down, Magic Attack Down | Virus, Burn, Addle, Amnesia |
| DEX Down, Accuracy Down | Slow, Petrify, Rasp |
| VIT Down, Def Down | Silence, Gravity, Choke |
| STR Down, Attack Down | Poison, Drown |
| CHR Down, Magic Eva Down | Blind, Curse, Dispel (Dark Based) |
| Magic Acc Down | Charm, Flash, Dispel (Light Based) |
|
HP/MP Down, I'm still not sure on, same goes for terror (could possibly be fire based after resisting a lot of blistering roars using Unda tonight), and doom/death (dark based but not sure how resistable)
There's likely exceptions but it's generally those elements.