Playing this and following up with Yelana - Northuldra Leader or Lilo - Best Explorer Ever allows for not only making a favorable trade in a challenge, but replacing itself when banished supports the hand advantage Amethyst typically provides
Wurmcoil Engine, for instance, was initially selling for $1000 , as was Ramos, Dragon Engine
I use this term loosely but am mostly looking for card draw or any spell that nets me 2+ non-land cards in hand / directly into play 10 sources of "card advantage;" split between creature / artifact / enchantment removal 6 targeted removal, creature-light decks might want one more, creature-heavy decks might want one less 3 board wipes
Ugin, Eye of the Storms Boy, this is a good planeswalker
Secrets of Strixhaven | Winnowing Season Killian Lu loses a duel