I don't have SCAG yet, and one of my players is planning on converting his level 4 PC into a Bladesinger.
Any opinions? How powerful is this? Anything I need to be aware of?
The cantrips seem powerful, but not all *that* powerful... but their 'power up' ability seems pretty boss. (The one they can use 2 times per short rest)
Just looking to tap into the collective wisdom so I am not surprised.
Like most other wizards, a Bladesinger is 80% wizard, 20% specialist. As specialists go, it's not bad. Rotten saves but good AC and concentration.
Compared to a Paladin 6/Wild Sorcerer X, a Bladesinger will have similar AC, worse saves, no smiting, worse healing, a much better overall spell list, and more spell slots of higher levels. More emphasis on the "mage" part of the "fighter/mage" equation.
Compared to a Fighter 1/Necromancer X, he'll have slightly better AC eventually (no sooner than 12th level unless he rolled great stats), a worse use for his bonus action, worse Con saves but better Wisdom saves, more MAD, slightly better personal defense, no self-healing, and no army of undead minions. More emphasis on getting one's hands dirty, and more socially acceptable.
Compared to a Fighter 1/Abjuror X, he'll have a slightly better AC no sooner than 12th level, have less ability to keep Concentration, worse Counterspelling, more MAD, and will inflict more at-will damage.
Compared to a Fighter 1/Diviner X, he has better AC at 12th level, more MAD, less out of combat utility, and no Portent.
But every single one of those Fighter 1/Wizard X builds has more in common with the Bladesinger than they have differences. All of them will use Contingency to add virtual HP (False Life V, Dimension Door, Polymorph are all candidates); all of them can True Polymorph or Foresight themselves at high level; all of them can abuse Planar Binding and Simulacrum; all of them are quite tanky when they stack Blink/Blur/Mirror Image; all of them can Fireball or Cone of Cold at need; all of them, in short, have access to the excellent wizard spell list, and all of them will be powerful in play.
BTW, for the most part, melee cantrips like Thunderclap/Greenflame Blade/Sword Burst/Booming Blade (yech, horrible name--I'd rename it False Fetters) help Fighter 1/Wizard X more than they help Bladesingers. Gives them a pretty good at-will attack with no Extra Attack opportunity cost, since they don't have Extra Attack anyway.