One of my players is using Unearthed Arcana warforged with Tashas Bladesinger. Nothing in the rules say that the heavy plating is heavy armor, and I personally agree with that. However this build is just monstrous. At level 5 he'll have an AC of 16+3+4. And he can use shield.
Rule #1 of D&D : If the rules make the game unfun then change the rules.
If you think his AC will make the game unfun for you or the other players at the table simply tell them that and that they must come up with a different character instead.
Hit the other characters with AC attacks. Hit the Bladesigner in his dumped CHA or STR or CON saves. AC is only good if the enemies target your AC, and if it's too high then any intelligent enemies will switch to easier targets. Unless it's a solo game, his survival depends on their survival too.
Also, you probably want to read up on the rules around bladesingers and warforged. I don't know what you mean by "heavy plating" - all warforged get is +1 to AC. You should incquire about this heavy plating and make sure it isn't a homebrew item, or the player isn't using a homebrew warforged race. Also, bladesinging doesn't work with medium/heavy armor or shields, so his AC should be more like 13 (studded armor) + DEX + 1 (warforged) + INT during bladesong.
PS - quick Google search shows that Heavy Plating was from the Unearthed Arcana version of Warforged. The final version did not have this feature due to exactly this kind of ambiguity - it was intended to count as armor but it did not explicitly say that.
Warforge was changed from the unearthed arcana version for a reason. The integrated armor that was given to them in the main books does say that the armor they use is armor. If one of your players are using UA you should allow all your players to use the best version of things from the UA.
One of my players is using Unearthed Arcana warforged with Tashas Bladesinger. Nothing in the rules say that the heavy plating is heavy armor, and I personally agree with that. However this build is just monstrous. At level 5 he'll have an AC of 16+3+4. And he can use shield.
Rule #1 of D&D : If the rules make the game unfun then change the rules.
If you think his AC will make the game unfun for you or the other players at the table simply tell them that and that they must come up with a different character instead.
Hit the other characters with AC attacks. Hit the Bladesigner in his dumped CHA or STR or CON saves. AC is only good if the enemies target your AC, and if it's too high then any intelligent enemies will switch to easier targets. Unless it's a solo game, his survival depends on their survival too.
Also, you probably want to read up on the rules around bladesingers and warforged. I don't know what you mean by "heavy plating" - all warforged get is +1 to AC. You should incquire about this heavy plating and make sure it isn't a homebrew item, or the player isn't using a homebrew warforged race. Also, bladesinging doesn't work with medium/heavy armor or shields, so his AC should be more like 13 (studded armor) + DEX + 1 (warforged) + INT during bladesong.
PS - quick Google search shows that Heavy Plating was from the Unearthed Arcana version of Warforged. The final version did not have this feature due to exactly this kind of ambiguity - it was intended to count as armor but it did not explicitly say that.
My homebrew subclasses (full list here)
(Artificer) Swordmage | Glasswright | (Barbarian) Path of the Savage Embrace
(Bard) College of Dance | (Fighter) Warlord | Cannoneer
(Monk) Way of the Elements | (Ranger) Blade Dancer
(Rogue) DaggerMaster | Inquisitor | (Sorcerer) Riftwalker | Spellfist
(Warlock) The Swarm
Warforge was changed from the unearthed arcana version for a reason. The integrated armor that was given to them in the main books does say that the armor they use is armor. If one of your players are using UA you should allow all your players to use the best version of things from the UA.