Frontier Warmonger 

Creature — Human Warrior
$0.20 #3204 0.18 6.5 years
Whenever one or more creatures attack one of your opponents or a planeswalker they control, those creatures gain menace until end of turn.
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Frenzied Gorespawn92%
$2.60↑#12816↓0.41↑2.7 years↓
"Whenever one or more creatures attack one of your opponents, those creatures gain menace until end of turn."
Triarch Stalker88%
$0.39↑#15081↓0.50↑4.0 years↓
"Creatures attacking the last chosen player have menace."
Gahiji, Honored One86%
$0.36↑#11877↓0.1913.0 years↑
"Whenever a creature attacks one of your opponents or a planeswalker an opponent controls, that creature gets +2/+0 until end of turn."
Roar of Resistance82%
$2.77↑#5749↓0.153.7 years↓
"Whenever one or more creatures attack, you may pay 
. If you do, creatures attacking your opponents and/or planeswalkers they control get +2/+0 until end of turn."
Battlesong Berserker80%
$0.17↓#20830↓0.191.9 years↓
"Whenever you attack, target creature you control gets +1/+0 and gains menace until end of turn."
Frenzied Saddlebrute78%
$0.15↓#8233↓0.06↓5.9 years
"All creatures can attack your opponents and planeswalkers your opponents control as though those creatures had haste."
Pyreheart Wolf74%
$0.21↑#11809↓0.2714.7 years↑
"Whenever this creature attacks, creatures you control gain menace until end of turn."
Item Shopkeep73%
$0.15↓#13617↓0.251.4 years↓
"Whenever you attack, target attacking equipped creature gains menace until end of turn."
Gruul War Chant72%
$0.19↓#6784↓0.35↑13.5 years↑
"Attacking creatures you control get +1/+0 and have menace."
Blood-Chin Rager72%
$0.17↓#13395↓0.00↓11.6 years↑
"Whenever this creature attacks, Warrior creatures you control gain menace until end of turn."
Vow of Torment70%
$0.29↑#9450↓0.125.9 years
"Enchanted creature gets +2/+2, has menace, and can't attack you or planeswalkers you control."
Inquisitorial Rosette70%
$2.90↑#7054↓0.184.0 years↓
"Whenever equipped creature attacks, create a 2/2 white Astartes Warrior creature token with vigilance that's attacking. Then attacking creatures gain menace until end of turn."
Hagra Constrictor70%
$0.17↓#9173↓0.196.1 years
"Each creature you control with a +1/+1 counter on it has menace."
Black Widow, Double Agent70%
$0.19↓#18766↓0.35↑0.3 years↓
"Whenever a creature you control attacks alone, it gains first strike and menace until end of turn."
Kruin Outlaw // Terror of Kruin Pass70%
$0.38↑#10353↓0.00↓15.1 years↑
"Werewolves you control have menace."