Dueling and two weaopon fighting are fighting styles available to rangers so it appears to be intended that these should be viable options for them and most videos I have seen agree with this (even if they say archery is the optimal style), but don't think I have seen warcaster recommended as a feat for a druid.
Any spell with a somantic or material component requires a free hand which a S&B or TWF ranger does not have. If the spell has a material component they might be able to find a moon sickle at some point but even then it is not finesse so any attacks would need to be with strength.
A second level ranger could limit their spell casting to out of combat spells like goodberry or verbal only spells (e.g. hunter's mark and zepher strike) but given the only verbal l only spell a ranger gets above 1st level is guardian of nature does any S&D or TWF ranger that wants ot cast spells in combat have to get warcaster before they get access to second level spells?
If you look at material components for some ranger spells they just require a weapon. For those spells you are fine.
For things that don't you usually will find it not upsetting to plan out your turns and managing equipment if those are the spells you use. (Start combat with one weapon[or no weapon and a shield] and cast. Turn 2 draw second.)
Now, is War caster nice for rangers?... yes but often the hierarchy of beneficial feats has equal or better choices.
Edit: after checking ....absorb elements and Tree Stride are the biggest offenders for melee but tend to be important late game/higher level play. So I haven't decided how annoying it is. Spikegrowth and Conjure spells are annoying if you want to cast and can't. But I've never planned on using them with full hands. Asharladons Stride is also restricted but not for everyone.
Still I might have been hasty in my "not a big deal"response. I play a "plan ahead" prep spell style and usually precast but that's not always a option.
I managed absorb elements by never having my sword drawn at the start of combat. In general the dragon/caster likes using their big AOE on the first turn. So I found about a third to half of the time I still got to use it.
Dueling and two weaopon fighting are fighting styles available to rangers so it appears to be intended that these should be viable options for them and most videos I have seen agree with this (even if they say archery is the optimal style), but don't think I have seen warcaster recommended as a feat for a druid.
Any spell with a somantic or material component requires a free hand which a S&B or TWF ranger does not have. If the spell has a material component they might be able to find a moon sickle at some point but even then it is not finesse so any attacks would need to be with strength.
A second level ranger could limit their spell casting to out of combat spells like goodberry or verbal only spells (e.g. hunter's mark and zepher strike) but given the only verbal l only spell a ranger gets above 1st level is guardian of nature does any S&D or TWF ranger that wants ot cast spells in combat have to get warcaster before they get access to second level spells?
If you look at material components for some ranger spells they just require a weapon. For those spells you are fine.
For things that don't you usually will find it not upsetting to plan out your turns and managing equipment if those are the spells you use. (Start combat with one weapon[or no weapon and a shield] and cast. Turn 2 draw second.)
Now, is War caster nice for rangers?... yes but often the hierarchy of beneficial feats has equal or better choices.
Edit: after checking ....absorb elements and Tree Stride are the biggest offenders for melee but tend to be important late game/higher level play. So I haven't decided how annoying it is. Spikegrowth and Conjure spells are annoying if you want to cast and can't. But I've never planned on using them with full hands. Asharladons Stride is also restricted but not for everyone.
Still I might have been hasty in my "not a big deal"response. I play a "plan ahead" prep spell style and usually precast but that's not always a option.
I managed absorb elements by never having my sword drawn at the start of combat. In general the dragon/caster likes using their big AOE on the first turn. So I found about a third to half of the time I still got to use it.
If you don't have any combat cantrips, Resilient CONSTI is often better since it affects all your CON saves, not just those related to concentration.