First Day of Class 
Instant
$0.19 #10155 0.52 5.4 years
Whenever a creature you control enters this turn, put a +1/+1 counter on it and it gains haste until end of turn.
Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)
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Guiding Voice96%
$0.14↓#23779↓0.11↓5.4 years
"Learn."
Cram Session96%
$0.14↓#25196↓0.31↓5.4 years
"Learn."
Pop Quiz95%
$0.15↓#24894↓0.00↓5.4 years
"Learn."
Hunt for Specimens94%
$0.18↓#18219↓0.42↓5.4 years
"Learn."
Enthusiastic Study93%
$0.23↑#20125↓0.505.4 years
"Learn."
Study Break93%
$0.10↓#24906↓0.00↓5.4 years
"Learn."
Igneous Inspiration92%
$0.08↓#25516↓0.07↓5.4 years
"Learn."
Arcane Subtraction92%
$0.07↓#25556↓0.20↓5.4 years
"Learn."
Academic Dispute89%
$0.23↑#17765↓0.22↓5.4 years
"Learn."
Rise of Extus86%
$0.10↓#28839↓0.00↓5.4 years
"Learn."
Professor of Symbology85%
$0.17↓#26008↓0.13↓5.4 years
"When this creature enters, learn."
Gnarled Professor85%
$0.05↓#23954↓0.21↓5.4 years
"When this creature enters, learn."
In the Web of War84%
$0.40↑#18880↓0.80↑21.6 years↑
"Whenever a creature you control enters, it gets +2/+0 and gains haste until end of turn."
Field Trip84%
$0.16↓#18360↓0.29↓5.4 years
"Learn."
Ogre Battledriver84%
$0.30↑#3287↑0.22↓13.7 years↑
"Whenever another creature you control enters, that creature gets +2/+0 and gains haste until end of turn."
Divide by Zero82%
$0.08↓#16956↓0.07↓5.4 years
"Learn."
Sparring Regimen82%
$0.26↑#17335↓0.00↓5.4 years
"When this enchantment enters, learn."
Eyetwitch81%
$0.24↑#15548↓0.27↓5.4 years
"When this creature dies, learn."
Poet's Quill78%
$0.27↑#17323↓0.25↓5.4 years
"When this Equipment enters, learn."
Good-Fortune Unicorn78%
$0.20↑#3509↑0.17↓7.2 years↑
"Whenever another creature you control enters, put a +1/+1 counter on that creature."