Agent of Horizons 

Creature — Human Rogue
{2}{U}: This creature can't be blocked this turn.
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Cards that do something similar expected a card that isn't here?
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Sewer Crocodile 93%
$0.05#26823
"{3}{U}: This creature can't be blocked this turn. This ability costs {3} less to activate if there are five or more mana values among cards in your graveyard."