These dont always work, but they often have great targets, whether thats effectively countering a counterspell, pointing removal towards someone elses creature, or best case, making a Time Warp target you instead
At a bare minimum, even if every draw off of Ancestral Recall is dead or not immediately playable, we will still have an immediately playable Disenchant (Eternal Central Eternal Weekend Old School 4th Place Edition)
Comparable iconic trainers (like Misty or Cynthia full arts) tend to appreciate over time, so Erika might follow suit
A solid base for what would become one of the flashiest eras in TCG history
If you can warp voting in your favor with cards like The Valeyard and Tivit, Seller of Secrets, you can really ensure that a problematic permanent that you need destroyed is dealt with through Voters Dilemma
This helps you make smarter decisions about which sets to invest in and when its the right time to make a move