I know this has sort of been answered, but I think it needs a recap.
Enfeebling breaks into 3 categories:
1. INT (Sleep, Grav etc)
2. MND Static effect (silence etc)
3. MND Variable effect (Para and Slow only)
Some people will argue over INT increase bind or blind potency, those people have 0 supporting evidence, and just like arguments.
INT set should be as much skill as you can get without dropping too much INT, aim for ~100-120INT with maximum amounts of skill. This suggestion is based on the assumptions that magic accuracy for enfeebles works in a similar way to nukes.
My set
MND static set should basically be the same as above, just with MND instead of INT.
My set (needs a decent earring)
MND variable effect set shouldn’t be a single set. You should work towards at least 2 sets, a Staff set and a Wand/Shield set. These sets should have the maximum amount of MND you can find, while maintaining a decent land rate. Always try your first para/slow with the max MND set then re-try with a little less MND and more skill until you stick it.
A good Slow/Para build makes a lot of difference, it can make the difference between your tank struggling with shadows and simply overlapping Ni.
My staff set (is pretty rubbish, it’s the main set I am working on), I don’t have a wand set on FFXIAH as I am lazy.
At the OP, HQ staves is one of the main things to go for as RDM as they make landing stuff (relatively) easy, this is the basis of a solid ‘static effect build’ and gives you the flexibility to put more MND in your para/slow build.
As for nuking, HQ staves are the first order of the day here too. After that it all gets situational. It comes down to the mob/merits/food etc. But there are few situations where a RDM needs a full skill build (as any situation it is required, a RDM shouldn’t be nuking), so I carry a 1 size fits all build which works for most low man NMs and normal mobs.