Crusty Old Meatwad (he/him)
Not really a response. It costs a first level slot to re-summon it.Assuming that you will never encounter a Dispel Magic spell, because of the default spell selection in the MM is a huge catch in my book.
The subclass was introduced in the book that has as it's raison d'etre is Player Customization. DMs could always modify monsters, but Tasha's should further reinforce that. If a sorcerer farmer can cast Magic Chicken Missiles...then a DM can swap spells from the pre-made lists.
I play defensively....the Manifest Mind ability is easily negated. Failure to recognize this in a very difficult game is going to lead to a poor ending.
But hey, man if you and TM never encounter Dispel Magic...cool.