hello, i didn't understand in the players handbook if a bard (for example) can cast two spells in the same turn with the extra attack feature, or if the extra attack is only with weapons?
the same quastion if i multiclassed in fighter 5 cleric\wizard 1 - can i cast a spell as extra attack or not?
thank you
No. Extra attack is just for weapon attacks.
Fighter's Action surge can be used to cast 2 spells on the same turn.
Eldrich Knights and valor bards have the option to cast and attack in the same round.
Sorcerer's can quicken a spell to cast it and a cantrip in the same round.
I think that's it.
Extra Attack lets you make multiple attacks when you use the Attack Action (which in turn uses your action). Spells are cast using the Cast a Spell Action (again, using your action).
Thus Extra Attack won't let you cast more spells, but Action Surge will.
Some spells can be cast as a bonus action by default. A person can cast a cantrip as an action and one of those spells as the bonus action to cast 2 spells in the same turn as well. A person could fit in a reaction spell too, possibly. It depends on what time / action type requirement is involved in each individual spell in those cases. In anycase, that's not part of the extra attack feature.
Ok thank thank you!
and one more question - if a fighter (lvl 5) with the extra attack feature uses his action surge, he gets 2 attacks for every action (4 attacks)?
Correct 