Bladeborn Elf

Bladeborn Elf has Double Strike as long as you control another Elf.
{g}{w}{t}: Untap target monocolored Elf. It gains +1/+1 until end of turn.
Elves fight in ritualistic manners. You may think you are about to win the battle, but the next thing you know, you have a dagger being forced through your jugular.