All I know is control will exist, since it always does, and Im particularly scared of U/B Control as The Scarab God is very good against this deck
Worldly Tutor sets the bar for green's ability to find creatures it needs when it needs them, while Chord of Calling , Green Sun's Zenith , and Finale of Devastation puts them into play
Stand out at the table with this hand-painted Kozilek, the Great Distortion alter
Because Breena is so efficient at loading up on +1/+1 counters I've leaned into it with a strong counter subtheme: we use those counters to draw cards off Dusk Legion Duelist, ramp with Scholar of New Horizons, have board wipe insurance with Felisa, Fang of Silverquill, and turn our team into lethal angels with Sigarda's Summons
Then, copy the spell targeting yourself and repeat until you win
Im not as high on cards like Axgard Cavalry or Dauntless Veteran that require synergies to work, so these are coming out