Assault Strobe 
Sorcery
Target creature gains double strike until end of turn. (It deals both first-strike and regular combat damage.)
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Sorcery
Target creature gains double strike until end of turn. (It deals both first-strike and regular combat damage.)