Casting big area effect damage spells is great fun. Taking forever to resolve them is not. Let's reverse engineer the saving throw math so we can get to the narrative resolution quicker.
Flanking is an optional rule in the D&D Dungeon Master's Guide that grants players advantage when their characters attack opposite sides of an enemy. This optional rule can enhance tactical aspects of your game. Understanding more about how this affects different characters can help you decide when to use flanking in your campaign. If you're a player who knows your DM employs the flanking rule, this may help you avoid some pitfalls.