While making an Bladesinger Wizard I wondered if I would be able to use Booming Blade twice while hasted.
Booming Blade: As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spell’s range, otherwise the spell fails.
Haste: Until the spell ends, the target’s speed is doubled, it gains a +2 bonus to AC, it has advantage on Dexterity saving throws, and it gains an additional action on each of its turns. That action can be used only to take the Attack (one weapon attack only), Dash, Disengage, Hide, or Use an Object action.
What exactly do they mean with:"one weapon attack only". Is this to prevent characters with the extra attack to make 2 melee actions? Does this prevent me from casting 2 spells (cantrip or higher spells) in a single turn?