I understand that I can't cast two spells per round (PHB p.202) even when using the Quickened Spell metamagic feat. However, is it allowable to cast a concentration spell like Crown of Madness on one turn, then on the following turn to use my main action to maintain that spell, and use Quickened Spell to cast another (non-concentration) spell with my bonus action?
[RPG] Quickened spells and concentration
concentrationdnd-5emetamagicsorcerer
Related Topic
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- [RPG] Is it possible to cast a quickened Fireball as a bonus action, and also use a bonus action to make an attack with Spiritual Weapon on the same turn
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Best Answer
Yes, you can do it
Maintaining the spell is not casting it.
Note that it says "use your action to maintain control over the target" - that's not casting a spell. If it was worded like "you must use your action to cast this spell again, without using spell slots", for example, you wouldn't be able to cast another spell as a bonus action in the same turn.
One simple way to see that you are not casting the spell again is that you don't expend any additional spell slots, even though the spell you would be casting is not a cantrip and it doesn't state you don't spend a spell slot (i.e. there is no specific rule in the spell telling you to go against the general rule - which would be to spend a spell slot).
As a note, the fact that it is a concentration spell doesn't matter. The only thing this changes is that the spell you are casting in the next round/turn must be non-concentration, as mentioned by you.
Side note
This is wrong.
You are not allowed to cast a spell as bonus action and then another (non-cantrip) spell as an action. (For clarification, you can't do it the other way around either, i.e., you can't cast a (non-cantrip) spell as an action and then cast another as a bonus action. For curiosity, you can't cast a (non-cantrip) spell as an action and a cantrip as a bonus action either. The cantrip has to be the action.)
You can, however, use more than one spell in your turn. For example, you can cast one spell as an action and another as a reaction, or use Action Surge (either multicass into fighter or EK) and use two spells as actions in the same turn. (Trivially, you can combine both the things I mentioned and cast three spells in a turn)