So I have been making a few homebrews in my spare time, some more serious, some less so. That said, I am not very experienced when it comes to balance and I like to make my creations as balanced as possible. I will post a few homebrews below, and like to hear some genuine criticism regarding them and what could be done to make them more balanced (be is weaker or stronger) or perhaps how to word certain parts of them better.

Subclasses:

Paladin - Oath of the Gambler

Cleric - Isekai Domain

Spells:

Lyneus' Chained Dance

Lyneus' Aftershock

Hex of Inversion

Zone of Inversion

Defenestrate Creature

Feats:

Dual Mind (Edited for balance, thanks for the critique!)

That's all of them, I look forward to hearing any feedback. :)

Definitely reconsider Dual Mind. Double Concentration with no limitations is incredibly powerful and is more appropriately given out through a legendary magic item or class/subclass capstone feature, and even then you need to impose strong limits and drawbacks to it. Making it easier to break concentration is not enough because the monster is already dead/disabled at that point.

Here's how I've homebrewed double concentration - Amphisbaena Ring And I'm sure many would say even this is too good.

Quote from scatterbraind >>

Definitely reconsider Dual Mind. Double Concentration with no limitations is incredibly powerful and is more appropriately given out through a legendary magic item or class/subclass capstone feature, and even then you need to impose strong limits and drawbacks to it. Making it easier to break concentration is not enough because the monster is already dead/disabled at that point.

Here's how I've homebrewed double concentration - Amphisbaena Ring And I'm sure many would say even this is too good.

I had a bit of a feeling that it indeed was still a tad too strong, giving it more drawbacks is certainly something I've been considering. Though rather than looking at taking damage over time I have been thinking about limiting the spells to perhaps 2nd or 3rd level spells max.

That said, I have taken a look at your legendary item, and it has given me some ideas for balancing as well. Thanks!