Can your Bonus Action used to cast action or only one bonus?

Can a caster run around and force enemies to repeatedly “enter” an Area of Effect over and over?

Destructive Wrath maximizes all damage getting rolled, as long as some of it is thunder or lightning?

Would the Artificers Flash of Genius work on Death Saving throws?

Does the rule on casting a bonus action spell apply when you take a bonus action granted by a spell?

Bonus Action Spell:You can’t cast another non-cantrip CT1 spell but nothing prevent you from having already cast one right?