Lizardfolk, Scrap-Built (5e Race Variant)
From D&D Wiki
When the sarrukh were creating their reptilian minions, the lizardfolk were considered the miscellaneous sort. They lacked the magical intelligence saved for the yuan-ti, and were intended to be mere servants, like troglodytes, for superior creatures. When the sarrukh empire fell, the yuan-ti's hubris led them to try and recreate servants for themselves, with the belief of surpassing their own creators. The scrap-built lizardfolk are the result, made with chimerical parts of various reptilians during the beginning twilight of the yuan-ti empire.
This race variant replaces the speed, ability score, and hold breath trait. You gain a different speed, ability score increase, and the constructed anatomy trait.
Speed. Your base walking speed is 25 feet and you have a swimming speed of 30 feet.
Constructed Anatomy. Due to the strange way you were designed, your anatomy is very different from a normal lizardfolk's. You can hold your breath for up to 1 hour at a time. Additionally, You require half as much food and water per day as a normal creature your size.