Fucking billions! ONE billion would be enough to never have to work again if you live lavishly! And this irresponsible, pathetic narcissist is having a tantrum because number won’t go up. I actually want to be alone in a room with him tied to a wall and a set of supplies that would make the CIA go pale. Same with every other sociopathic manchild that’s killing us all because ”Durr, number go up,”
… if I cast Booming Blade, am I locked out of Extra Attack because I took a “Cast a Spell” action instead of an “Attack” action?
Yes. Extra Attack specifies that you must take the Attack action. With Booming Blade, you’re still taking the Cast a Spell action, the singular melee weapon attack is simply how the spell is cast, not an entire Attack action.
This is the same for all spells that require you to make a weapon attack as part of casting it. The only spells that kind of break this rule are the various “Smite” spells, but they’re worded like “When you next hit a creature with a melee weapon attack…”, and generally use a bonus action rather than an action, so you can still use your action for the Attack action.
So, a bit more than an annoyance, but not quite instant Thanksgiving dinner. Good to know.
Ah, the infinite power of coffee and deadlines.
Depends on the CR. You might just annoy it.
Voyager
You sound like you’ve eaten the Roundmeal regularly since childhood.