Devoted Crop-Mate 

Creature — Human Warrior
You may exert this creature as it attacks. When you do, return target creature card with mana value 2 or less from your graveyard to the battlefield. (An exerted creature won't untap during your next untap step.)
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Cards that do something similar expected a card that isn't here?
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Ahn-Crop Champion 84%
$0.16#23360
"You may exert this creature as it attacks. When you do, untap all other creatures you control."
Champion of Rhonas 81%
$0.25#13758
"You may exert this creature as it attacks. When you do, you may put a creature card from your hand onto the battlefield."
Watchful Naga 81%
$0.08#25518
"You may exert this creature as it attacks. When you do, draw a card."
Clockwork Droid 80%
$0.23#15728
"You may exert this creature as it attacks. When you do, it can't be blocked this turn and you scry 1."
Oketra's Avenger 80%
$0.07#27538
"You may exert this creature as it attacks. When you do, prevent all combat damage that would be dealt to it this turn."
Bitterblade Warrior 80%
$0.08#25153
"You may exert this creature as it attacks. When you do, it gets +1/+0 and gains deathtouch until end of turn."
Glorybringer 80%
$0.27#7313
"You may exert this creature as it attacks. When you do, it deals 4 damage to target non-Dragon creature an opponent controls."
Gust Walker 80%
$0.03#28263
"You may exert this creature as it attacks. When you do, it gets +1/+1 and gains flying until end of turn."