Mokuba Kaiba

Eminence - When you cast a Virus spell, while
this card is in your command zone or on your
battlefield, summon a Black and Green 1/1 Giant
Germ token with "When this card leaves the
battlefield, inflict 1 damage to any target".
When Mokuba Kaiba enters the Battlefield, put
a Black or Green spell from your graveyard into
your hand.
Ace Monster (You can have two commanders if
both have Ace Monster, and one is a Duelist.)