When Sharp-Eyed Rookie's ability tries to resolve, the other creature's power is greater, so you'll put a +1/+1 counter on Sharp-Eyed Rookie and investigate
If you want to lean on the safer side, moderately and heavily played copies of the card typically sell for $240-$250
$99.99 Deflecting Swat Commander 2020 $69.99 Boseiju, Who Endures Kamigawa: Neon Dynasty $44.99 Lotus Petal Tempest $21.99 Inventors' Fair Kaladesh $37.99 Delighted Halfling The Lord of the Rings: Tales of Middle-earth $54.99 Orcish Bowmasters The Lord of the Rings: Tales of Middle-earth $49.99 Urza's Saga Modern Horizons 2 $74.99 Rhystic Study Prophecy $42.99 Otawara, Soaring City Kamigawa: Neon Dynasty $159.99 Ancient Tomb Tempest $74.99 Esper Sentinel Modern Horizons 2 $84.99 Fierce Guardianship Commander 2020 0 results found
P/T Number 202a Language Espaol Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Standard, Timeless, Vintage Rulings (9/19/2025) Transforming Gwen Stacy doesn't cause her to leave the battlefield, which means that the card you exiled when she entered can still be played after she transforms
All yours for around $93 in the borderless variant, or around $30 for the standard print right now at TCGPlayer
The problem is that the market is unstable, making it challenging to place a monetary value on the Black Lotus