Howling Moon 
Enchantment
$1.80 #5659 0.00 4.8 years
At the beginning of combat on your turn, target Wolf or Werewolf you control gets +2/+2 until end of turn.
Whenever an opponent casts their second spell each turn, create a 2/2 green Wolf creature token.
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Cards similar to Howling Moon expected a card that isn't here?
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Dragonlair Spider90%
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Spirit of the Hunt86%
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"Whenever an opponent casts a blue spell during your turn, you may create a 4/4 green Elemental creature token."
Nightpack Ambusher80%
$0.46↓#66480.11↑7.2 years↑
"Other Wolves and Werewolves you control get +1/+1."
+1 more matching line
Infested Roothold78%
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"Whenever an opponent casts an artifact spell, you may create a 1/1 green Insect creature token."
March of the World Ooze78%
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Packsong Pup76%
$0.27↓#8473↓0.23↑4.8 years
"At the beginning of combat on your turn, if you control another Wolf or Werewolf, put a +1/+1 counter on this creature."
Noosegraf Mob75%
$0.29↓#10793↓0.33↑10.1 years↑
"Whenever a player casts a spell, remove a +1/+1 counter from this creature. If you do, create a 2/2 black Zombie creature token."
The Council of Four74%
$0.62↓#2065↑0.49↑4.2 years
"Whenever a player casts their second spell during their turn, you create a 2/2 white Knight creature token."
Mangara, the Diplomat74%
$0.37↓#612↑0.45↑6.2 years↑
"Whenever an opponent casts their second spell each turn, draw a card."
Snake Pit74%
$0.32↓#13956↓0.0626.9 years↑
"Whenever an opponent casts a blue or black spell, you may create a 1/1 green Snake creature token."
Kraum, Ludevic's Opus74%
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"Whenever an opponent casts their second spell each turn, draw a card."
Hollowhenge Overlord74%
$11.28↑#58140.064.8 years
"At the beginning of your upkeep, for each creature you control that's a Wolf or a Werewolf, create a 2/2 green Wolf creature token."
Arlinn, Voice of the Pack74%
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"Each creature you control that's a Wolf or a Werewolf enters with an additional +1/+1 counter on it."
Immerwolf74%
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"Each other creature you control that's a Wolf or a Werewolf gets +1/+1."
Hungry Ridgewolf73%
$0.15↓#19589↓0.29↑4.8 years
"As long as you control another Wolf or Werewolf, this creature gets +1/+0 and has trample."
Runebound Wolf73%
$0.22↓#13829↓0.40↑4.8 years
"
, 
: This creature deals damage equal to the number of Wolves and Werewolves you control to target opponent."
, : This creature deals damage equal to the number of Wolves and Werewolves you control to target opponent."
Mayor of Avabruck // Howlpack Alpha72%
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"Each other creature you control that's a Werewolf or a Wolf gets +1/+1."
+1 more matching line
Howlpack Resurgence72%
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"Each creature you control that's a Wolf or a Werewolf gets +1/+1 and has trample."