Academy Elite 

Creature — Human Wizard
This creature enters with X +1/+1 counters on it, where X is the number of instant and sorcery cards in all graveyards.
{2}{U}, Remove a +1/+1 counter from this creature: Draw a card, then discard a card.
click a line to search just that ability, click more to combine them
Cards that do something similar expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Inferno Project 83%
$0.23#21573
"This creature enters with X +1/+1 counters on it, where X is the total mana value of instant and sorcery cards in your graveyard."