Pack Attack 
Instant
Attacking creatures get +X/+0 until end of turn, where X is the number of players being attacked. Draw a card.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Attacking creatures get +X/+0 until end of turn, where X is the number of players being attacked. Draw a card.