I had 34 cards on my initial list for LCI, but I went through a second time and only went for the ones that really sparked joy for me
Getting a bunch of 0/1 creatures is a great way to shield your life total from many threats with haste after a Day of Judgment, and then you can sacrifice those that make it to your turn to rebuild your board position with minimal fuss, and possibly even a Blood Artist trigger or three
City of Brass would be a great reprint to include here
This cards mana cost is a bit steep, but if you can set things up with Aminatou, you may be able to play Soaring Lightbringer for only one white mana
Cards like Magebane Lizard and Cindervines double down on the noncreature punishment your Gruul commander encourages
Court of Locthwain Court of Locthwain gives you the ability to skim cards from an opponents deck in each of your upkeeps, casting them as long as you retain the monarch status