Your search for "Pensive Professor 321" revealed the following:
Pensive Professor - Extended Art (Foil) (SOS) from Secrets of Strixhaven, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Billy Christian Card Text:IncrementWhenever one or more +1/+1 counters are put on this creature, draw a card.
Pensive Professor - Extended Art (SOS) from Secrets of Strixhaven, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Billy Christian Card Text:IncrementWhenever one or more +1/+1 counters are put on this creature, draw a card.