I actually think the War domain is a decent option, especially for an NPC.
War domain lets you have 3-5 extra attacks as bonus actions (depending on Wis modifier) per long rest. Discussing whether short and long rests are implemented right in 5e is a point of some contention; the designers assumed you'd have 2-3 short rests ever long rest, and 6-8 encounters every long rest, but my own experience has been that parties tend to take long rests every 3-4 encounters. With the smaller number, that means you're basically a fully-functional melee combatant with 2+ attacks per round somewhere between 25% and 33% of the time. The rest of the time, you're presumably providing buffs and healing. That seems not too unreasonable to me, if not amazing.
As an NPC, a war cleric makes a great leader for something like an orc warband. The cleric can wear heavy armor and buff the rest of the group with effects like Bless or heals, and still gets 2 swings with a greataxe (say) once the PC melee characters engage. And the NPC is likely to hit, given the channel divinity ability for war.
I'm not personally super excited to play a war domain cleric -- I think they probably should've just gotten an extra attack at lvl 5 like the fighters -- but they seem very reasonable to me.
War domain lets you have 3-5 extra attacks as bonus actions (depending on Wis modifier) per long rest. Discussing whether short and long rests are implemented right in 5e is a point of some contention; the designers assumed you'd have 2-3 short rests ever long rest, and 6-8 encounters every long rest, but my own experience has been that parties tend to take long rests every 3-4 encounters. With the smaller number, that means you're basically a fully-functional melee combatant with 2+ attacks per round somewhere between 25% and 33% of the time. The rest of the time, you're presumably providing buffs and healing. That seems not too unreasonable to me, if not amazing.
As an NPC, a war cleric makes a great leader for something like an orc warband. The cleric can wear heavy armor and buff the rest of the group with effects like Bless or heals, and still gets 2 swings with a greataxe (say) once the PC melee characters engage. And the NPC is likely to hit, given the channel divinity ability for war.
I'm not personally super excited to play a war domain cleric -- I think they probably should've just gotten an extra attack at lvl 5 like the fighters -- but they seem very reasonable to me.