Pensive Professor (SOS 321)

Creature — Human Wizard • Mana cost: {1}{U}{U} • Secrets of Strixhaven • Rare

Increment (Whenever you cast a spell, if the amount of mana you spent is greater than this creature's power or toughness, put a +1/+1 counter on this creature.)
Whenever one or more +1/+1 counters are put on this creature, draw a card.

"To the patient mind, no problem is unsolvable."

Illustrated by Billy Christian.