Wizard Class 
Enchantment — Class
(Gain the next level as a sorcery to add its ability.)
You have no maximum hand size.
{2}{U}: Level 2
When this Class becomes level 2, draw two cards.
{4}{U}: Level 3
Whenever you draw a card, put a +1/+1 counter on target creature you control.
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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.
Iron Man, Armored Avenger 90%
$4.00#11357
"Whenever you draw a card, put a +1/+1 counter on target creature."
Lyla, Holographic Assistant 90%
$5.83#6974
"Whenever you draw a card, put a +1/+1 counter on target creature."
Jace, Arcane Strategist 83%
#12400
"Whenever you draw your second card each turn, put a +1/+1 counter on target creature you control."
Elrond, Master of Healing 80%
$0.34#6854
"Whenever a creature you control with a +1/+1 counter on it becomes the target of a spell or ability an opponent controls, you may draw a card."