At Knifepoint - Outlaws of Thunder Junction - 193

Enchantment

Mana Cost: {1}{B}{R}

During your turn, outlaws you control have first strike. (Assassins, Mercenaries, Pirates, Rogues, and Warlocks are outlaws.)
Whenever you commit a crime, create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery." This ability triggers only once each turn.

Uncommon · Outlaws of Thunder Junction · #193 (OTJ)

Illustrated by Francisco Miyara