I thought about things that exist in tabletop and are comparable in power to double spell / turn and actually there are some even without the obvious Action Surge. More specifically, these are Empowered Evocation and Overchannel, both of which belong to Evocation Wizard - Sorcerer's direct "nuker caster" competitor.

Empowered Evocation's exception to Magic Missile greatly increases its damage and makes it actually on the level of Sorcerer casting it twice in a row, but without additional spell slot and bonus action cost. While it is a single spell only effect, it is also one of the most common spells used.

Overchannel makes the spell deal maximum damage giving it 100% damage potential and can be used on Fireball as well. Sorcerer that double casts Fireball launches two Fireballs with 50% damage (average roll) potential. Both approaches have their advantage - single cast wastes only a single spell slot and has higher chance of failed saving throw (average 50%) while chance for two failed saving throws in a row is average 25%, but two casts can result in more than average damage done exceeding 100% damage potential and have an ability modifier applied to damage done of each cast separately. That's why Overchannel can be treated on the level of double casting the same spell in one turn, including AoE Spells.

With that taken into account, I don't think that allowing Sorcerer to cast 2 full spells / round gonna break the balance as much as many people here think. While I understand that these features require 10 / 14 lvl against 3 level for Sorcerer's Quicken Spell, Empowered Evocation has no cost and limits and is applied to every Magic Missile cast and Overchannel's first cast is free as well with subsequent casts' damage to Wizard being mitigated by healing or death-savers like Clone spell, while Sorcerer always wastes either his potential spell slots or class mechanic to use this feature.

However, I do agree that even if they keep access for 2 action levelled spells / turn for Sorcerer, it should be limited. There are many ways to do it - from big Sorcery point cost for levelled spells only or manual limitations of X per battle / short rest / long rest to a rule similar to old editions that increased spell slot level required for Quickened spells. They could even allow Quicken Spell affect levelled spell only from level X to keep it more in line with Empowered Evocation / Overchannel.

Last edited by Volsalex; 17/10/21 01:25 PM.