D&D 5E Do magic missiles automatically hit

[Yunru]

Okay so if I read the reply correctly...

3 separate missles that each deal 1d4+1 dmg individually. So maximum damage would be a total of 15.

Maximum for an Evocation Wizard would be 30, as their +Int applies to each dart.

 

[Tormyr]

I will point out at this point that only my Paladin was visible to the wizards one prefect was leading a group of scared apprentices through the city back to their tower. The head wizards had launched a takeover of the city, but the apprentices were probably in the dark on the plot.

The prefect had arranged a signal for everyone to launch their 1 first level spell. In this case there was only one target as everyone else was hidden.

 

[Yunru]

Still, it was a unfun choice on the DM's part for their one level 1 spell to be Magic Missile. (Or at leasr, for them all to be Magic Missile.)

 

[jasper]

Jasper - I think my standard is Int 8 and below change targets. 9-11 depends on monster. 12+ If I am nice I roll d20 at below the monster INT the monster targets 0 HP paladin to make sure.

Thats a lot of rolls every time you have an encounter. I got to say - who has time for that ?! I don't roll damage unless its spell damage, usually I just take "standard" dice as much as I can to hurry through the DM's part of the round. I want my players to be the ones that sit there determining "what to do" and "what dice to roll". Believe me, in a 10-15 minute long round with 6-8 players, I'm proud to take < 2 minutes for the monsters on the board - even if theres 10 of them. I know exactly what they're doing each round and will definitely alter what they do based on players (usually the monsters go for the characters that are doing the most damage, they'll likely only go for the weakest or a random player on the first round). But still, when a player character has been dropped, its time for the party to burn heal spells. And as soon as the healed player starts back up, they're getting a claw in the face. But given the way that death saving throws work - I don't want to take advantage of players that are on the ground.

However, of course, if an AoE happens to go off, and it tags a downed player, then by rule they gain a failure on their death saving throw.

What? it is only 1 roll. Or maybe 1 roll per monster in the monsters are above 11. So let me rephrase.
All my monsters int 8 minus switch targets.
All my monsters Int 9-11 depends on monster.
All my monsters Int 12+ play smart and if EVIL will target 0 HP pcs. If a player has a problem/ challenge I will roll a d20 at or below INT target the down pc. Above INT target new pc.
All my monsters