Blood-Red Igris

Double Strike, This must be your commander
Igris gets +1/+1 for each soldier and knight on
the field and can only attack if his power and
toughness are equal to 7/7. When Igris deals
combat damage to a creature an opponent
controls with power less than his, he perpetually
gets +1/+1. When Igris deals combat damage
to a creature an opponent controls with power
greater than his, he perpetually gets -1/-1.