B.H.'s Sorcerer Variant

Font of Magic

At 3rd level, you can use a bonus action on your turn to let flow the font of magic within you. When you do, you regain all of your spent sorcery points. In addition, for the next minute you are in a sorcerous trance.
While in this sorcerous trance, you can use any number of Metamagic options on a spell but can still only use each Metamagic option once. You can use this feature again after you complete a long rest.
Starting at 5th level, you can use this feature twice between long rests.

Metamagic

At 2nd level, you gain the ability to twist your spells to suit your needs. You gain two of the following Metamagic options of your choice. You gain another one at 6th, 10th, and 17th level. (Use this feature's option to add the extra MetaMagic option at level 6)
You can use only one Metamagic option on a spell when you cast it, unless otherwise noted.

Extra spells for your spell list as a sorcerer variant.

• Starting at level 1, select 1 extra spell using this feat and leave the rest of the options blank.
• Starting at level 3, select 2 extra spells using this feat and leave the rest of the options blank.
• Starting at level 5, select 3 extra spells using this feat and leave the rest of the options blank.
• Starting at level 7, select 4 extra spells using this feat and leave the rest of the options blank.
• Starting at level 19, select 5 extra spells using this feat.

Based on the Sorcerer Revisited by Benjamin Huffman.