Eternal of Harsh Truths 

Creature — Zombie Cleric
Afflict 2 (Whenever this creature becomes blocked, defending player loses 2 life.)
Whenever this creature attacks and isn't blocked, draw a card.
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Cards that do something similar expected a card that isn't here?
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Ophidian 96%
$0.43#26493
"Whenever this creature attacks and isn't blocked, you may draw a card. If you do, this creature assigns no combat damage this turn."
Werewolf Pack Leader 93%
$0.39#8342
"Whenever this creature attacks, if you attacked with creatures with total power 6 or greater this combat, draw a card."
Jon Irenicus, Shattered One 91%
$0.33#7523
"Whenever a creature you own but don't control attacks, you draw a card."
Angelic Sell-Sword 89%
$0.44#8244
"Whenever this creature attacks, if its power is 6 or greater, draw a card."
Gaea's Courser 87%
$0.04#24471
"Whenever this creature attacks, if there are three or more creature cards in your graveyard, draw a card."
Isperia, Supreme Judge 86%
$0.31#9985
"Whenever a creature attacks you or a planeswalker you control, you may draw a card."