Tsagan, Raider Warlord 
Legendary Creature — Dinosaur Berserker
Double strike Start your engines! Whenever Tsagan attacks, creatures you control get +1/+0 until end of turn for each creature you control with first strike or double strike. Max speed — Tsagan has deathtouch. Other creatures you control have first strike.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL