Do elves daydream? And if so, what’s it about?

I had a situation where a player cast the shield spell after being hit while blinded

Can Ranger Beast Master give their companion a command like ‘attack’ and have the animal continue to attack each turn?

Does Disintegrate no longer dusts the Wild Shaped Druid?

You have a huge creature and a druid, shaped to a water elemental, stops in its space. Can that huge creature attack the elemental druid?

Is that intentional so a third party can be either your ally or only the enemy of your enemy?