Like most Magic: The Gathering cards, the value of Search for Tomorrow depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Dominaria United Commander)
Beneath the narrative flair lies genuine tactical depth
Thats insane value, and even if you lose your 4-powered creature, you get to put a +1/+1 counter on a 3/3 and start the process over again
One way that Jhoira, Weatherlight Captain has an advantage over Rashmi, Eternities Crafter is that if you can string together multiple historic spells in one turn, you will able to draw multiple cards
The tokens it generates arent big but generate plenty of board presence that works incredibly well with cards that care about a number of fliers like Tide Skimmer or Favorable Winds