Prerequisites: The ability to cast at least one spell
As a war caster dnd 5e feat you have already practiced casting spells in a midst of combat and also the learning techniques which can grant you the below explained advantages:
- With this feat you have the advantage on the constitution saving throws which you are make to maintain your concentration on a particular spell whenever you take the damage.
- However you can perform the somatic components of the spells even though when you have weapons or the shield in one or both hands.
- whenever the hostile creature’s movement provokes the opportunity attack from you, however you can also use your reaction for casting the spell at the creature, but rather than it is making an opportunity to attack. Of course the spell should have the casting time of 1 action and it must target only that specific creature.
Check one more feat: wood elf magic feat