For a more Saga-heavy deck, Garnet, Princess of Alexandria is a perfect fit
Ignore any instruction to transform a modal double-faced card or to put one onto the battlefield transformed
She ensures that +1/+1 counters do not disappear when creatures leave play, which reduces the impact of removal and board wipes while increasing the importance of stable mana access through the top dual lands in MTG
Goldlust Triad Goldlust Triad is a midrange dragon that can massively accelerate your strategy
Luxior, Giada's Gift At first glance, Luxior, Giada's Gift is a cheap "turn planeswalker into creature" effect
+2/+2 for legendary creatures is a ton of boost and a definite wincon, and we already have Orzhov decks that play Lyra Dawnbringer and Vona, Butcher of Magan that would benefit