Here is a standard brew featuring cards from Core Set 2019.
The main goal of the deck is to create many angel tokens and take over the game. We do this by utilizing Resplendent Angel and many life gain effects. In the early turns, we play Fountain of Renewal and Ajani's Welcome to set up constant life gain, then we put creatures like Ajani's Pridemate on the board to either apply early pressure or help discourage opponent's attacks. Note the combo with Ajani's Welcome and Ajani's Pridemate, making the creature a 3/3 when it comes down (or more if you get multiple copies).
We want to get Resplendent Angel out as soon as we have the life gain engine going. It's pretty weak to removal since it only has 3 toughness, so that's why you'll have to navigate around red decks. However, it should only take the turn she comes down to make angels if the life gain is set up. Shalai, Voice of Plenty is very useful in preserving your Resplendent Angel, or can be a removal magnet.
We also feature Lyra Dawnbringer to pump up the all the angels, or to be a threat if somehow everything else went wrong. She's a combo with Resplendent Angel since all angels will have lifelink and can gain you tons of life. In the late game, we have Firesong and Sunspeaker to make our removal spells basically turn into angels. This is a back-up plan in most cases, but will probably be a major advantage against control matchups.
The sideboard is of course up in the air, but I like the idea of having Jaya Ballard come in and really capitalizing on the spells-make-angels strategy for control. It may not work, but it looks fun. And the rest is just guessing, of course.
But that's the deck! Suggestions are welcome!
