I want to give it to Death Toll, but that deck fumbles so hard on card quality that I dont think itll be too fun until you give it a makeover
With discard plus mill and life loss, it steadily drains resources
Thelonite Hermit: goes with anything dropping Saproling tokens, and then goes with anything that helps with counters on your creatures or gives you benefit because you have counters on your creatures
Ayara, First of Locthwain might not trigger when Nadier's 1/1 Elf creature tokens hit the field, but this deck should be able to play enough Black creatures to make an impact if she sticks around very long
With a $14 price tag on average, Iroas, God of Victory is a great reprint to see, especially with this Freya-flavored reskin
I love the way this allows you to get card draw, especially since White is not always a particularly great color for card advantage, and then rewards you for cycling as well through the +1/+1 counters