War Cleric

You have advantage one Constitution saves that you make to maintain concentration on a spell when you take damage.

You can perform the somatic components of spells even when you have weapons or a shield in one or both hands.

When a hostile creature's movement provokes an opportunity attack from you, you can use your reaction to cast a spell at the creature, instead of making an opportunity attack. The spell must have a casting time of only 1 action and must target only that creature.