Rider ZX, Fullmetal Assassin

Deathtouch
You may exert Rider ZX, Fullmetal Assassin
as it attacks. When you do it gains First Strike until end of turn.
Partner. (You can have two commanders if both
have partner.) If you control another Elemental Soldier creature you gain "At the beginning of your end step Rider ZX, Fullmetal Assassin phases out."