My favorite of the pair is the Amethyst and Steel, which centers on Jafar, Newly Crowned and his ability to bring back characters with the Illusion keyword from the banished (dead) pile to your hand
Landers I like to play midrange ramp decks, so of course Landers have grabbed my interest
The best is four-cost above with our Commander to give them both halves, so protection from all colors, flying, vigilance, double strike to kill fast, and then lifelink for mass gain with double strike, and indestructible too
In addition to the rare dual lands and regular commons, uncommons, rares, and mythic rares, this slot can include a card with the showcase magnified, showcase dossier, borderless, or Ravnica City treatment
At the beginning of your end step you can (it's a may effect) mill four, and if you do, you can Raise Dead up to two Rats from your graveyard to your hand