Booming Blade is a great cantrip for anyone who can add damage onto a single attack, can cast it as a bonus action (Quickened Spell metamagic) or reaction (Warcaster feat), or has enhanced mobility to skirmish (e.g. the Mobile feat).
Can you use extra attack with green-flame blade?
Using the “Cast a Spell” action to use Green-Flame Blade will give you one GFB attack, no matter how many attacks you would normally be making using an Attack Action.
Does booming Blade destroy the weapon?
On the other hand, Booming Blade deals the damage of one weapon attack plus 2d8/3d8 thunder damage (levels 11-16/levels 17-20) on a hit. So whenever this 2d8/3d8 is more damage than one weapon attack, the mean damage one does is better with Booming Blade.
Does booming Blade work with spiritual weapon?
So yes, if you use your Bonus Action to cast Spiritual Weapon, you can then cast Booming Blade with your Action. On subsequent turns, you aren’t casting a spell with your Bonus Action, you’re simply using it to make the Spiritual Weapon attack, so the “two spells” rule doesn’t apply.
Does booming Blade work with two weapon fighting?
No, you cannot make an off-hand attack with Booming Blade. Two weapon fighting lets you make an attack with your bonus action when you take the Attack action. Booming Blade is a spell, which requires you to have taken the Cast a Spell action, not the Attack action.
Can you cast a cantrip with both your action and bonus action?
Thus, you can cast cantrips with both your action and bonus action on the same turn. Cantrips are spells. Therefore, unless specified otherwise, they follow all the rules that apply to spells in general.
Can a bonus action be taken on the same turn as an action?
In fact any Bonus Action Spell can also be taken on the same turn as any Action, as long as it isn’t a Spell. Attack, Dodge, Help, Dash, ect, just not a second spell. It’s pretty common to use a Bonus Action Spell that affects your attacks and then take the Attack Action. as long as it’s a non-cantrip spell.
Can a spell be cast with a bonus action?
Yes. This rule appears in Chapter 9: Spellcasting of the Basic Rules (and PHB). In the Casting Time section, it states: A spell cast with a bonus action is especially swift. You must use a bonus action on your turn to cast the spell, provided that you haven’t already taken a bonus action this turn.
Can You combo attacks with the booming blade?
Both require concentration, and both require a Bonus Action to cast, of which you only get one per turn. Second, and most importantly to the root of your question, casting Booming Blade does not grant any additional attacks, through either the Extra Attack feature, nor Two-weapon Fighting.
