Proft's Eidetic Memory
From Murders at Karlov Manor set
Proft's Eidetic Memory
Legendary Enchantment
When Proft's Eidetic Memory enters, draw a card.
You have no maximum hand size.
At the beginning of combat on your turn, if you've drawn more than one card this turn, put X +1/+1 counters on target creature you control, where X is the number of cards you've drawn this turn minus one.