Cards like Undercover Butler

Ma Chao, Western Warrior80%

$80.20↑#273550.1727.5 years↑

"Whenever this card attacks alone, it can't be blocked this combat."

unblockable, attacking-matters-self, attack-trigger

Yuan Shao's Infantry80%

$7.57↑#317090.0627.5 years↑

"Whenever this creature attacks alone, this creature can't be blocked this combat."

unblockable, attacking-matters-self, attack-trigger

Shrouded Serpent80%

$0.30↑#284570.32↑26.4 years↑

"Whenever this creature attacks, defending player may pay

. If that player doesn't, this creature can't be blocked this turn."

unblockable, attacking-matters-self, attack-trigger

Preacher of the Schism78%

$0.84↑#4721↑0.20↑2.9 years

"Whenever this creature attacks the player with the most life or tied for most life, create a 1/1 white Vampire creature token with lifelink."

pseudo-dethrone, attacking-matters-self, attack-trigger

Bloodmist Infiltrator77%

$0.20↑#249750.067.7 years↑

"Whenever this creature attacks, you may sacrifice another creature. If you do, this creature can't be blocked this turn."

unblockable, attacking-matters-self, attack-trigger

Gravelgill Scoundrel77%

$0.18↑#20020↑0.140.7 years↓

"Whenever this creature attacks, you may tap another untapped creature you control. If you do, this creature can't be blocked this turn."

unblockable, attacking-matters-self, attack-trigger

Sword Coast Sailor76%

$0.21↑#6062↑0.00↓4.4 years↑

"Commander creatures you own have "Whenever this creature attacks a player, if no opponent has more life than that player, this creature can't be blocked this turn.""

pseudo-dethrone, attack-trigger, triggered-ability

Canal Courier74%

$0.22↑#244650.00↓10.1 years↑

"Whenever this creature and another creature attack different players, this creature can't be blocked this combat."

unblockable, attacking-matters-self, attack-trigger