I know from this question a critical hit on adamantine will still hit, but I was curious if the critical hit no longer being a critical hit affects features or feats that depend on it. An example that came up recently in a kind of pvp session is I had adamantine plate armor, and my friend had Gr...

My players are approaching a battle with Fraz-Urb'luu, who will have prepared the battlefield in some manner using an effect like Mirage Arcane and several other illusions and deceptions. Given that I anticipate some characters having the benefit of True Seeing and others will not, is there a wa...

Does the 5e D&D spell Faerie Fire provoke a Dexterity saving throw? Part of the description states: Any creature in the area when the spell is cast is also outlined in light if it fails a Dexterity saving throw. It does not state that the creatures in the area of effect must make a save. ...

Since the description of the Jim's magic missile spell (Acquisitions Incorporated, p. 76) states that it is an "improved version of" the magic missile spell, not a different spell, does the spell get nullified by shield the same way normal magic missile does?

Grog the Conqueror wants to sack an enemy city. He has his battering ram ready to go and wants his Wizard to use Wall of Force to create a roof over the ram by resting the spell on top of the frame. The part of the Wall of Force's spell description in question here is: It can be free floatin...

Classes like the artificer can prepare a new spell list in 1 minute, can an artificer cast a long-duration spell such as false life (1 hour), and immediately prepare a new spell list while retaining false life's effects?

I remember being impressed with this question, although it was closed as too broad for asking about too many things in one go. I left a comment at the time about asking less, and coming back to this later, I've decided to have a go at asking this. Note that I've also taken a look at this question...