In 5e P&P they are very strong because you can run around with multiples zombies or skeletons put into full plates and equipped with Greatswords (usually they might not be proficient depending on DM decision). Plus also use them as suicide bombers and combined with other spell schools.
A Level 6 Wizard of Necromancer school can run around with 8 Zombies if freshly raised (4 spell uses with Recovery) or 14 if built up and renewed over multiples days.
For a level 11 Wizard these numbers are already 42 and 62 when all spell slots 3+ are just used for Animate dead. That makes it clear there have to be limits in the game or the spell handled totally different.
Also its a bit strange how the environment is supposed to react when a guy walks around the city being followed by 16 Zombies.
As a DM I can make that happen but its tough in a game.
That said my players would never do it anyway.
In a group its often a bit lame having followers or long term summons as you kind of steal the role of the fighters in the group was especially the case with OP druids or even Summoner special classes in 3rd edition. In a game its easily OP when the disadvantages of said spells like you would have as a necromancer are not fully employed by the system.
Last edited by CyberianK; 04/03/20 03:20 PM.