The 12th Bowman

Indestructible, Vigilance, Reach, Infect, Inherit - {x}{x}{u}{b}{g} (A card can be cast for its inherit cost,
when it enters the battlefield attach it to a creature)
When the 12th Bowman enters the battlefield, Distribute X -1/-1 tokens on up to {x} creatures.
{ut}{p/b}, Heal 1
An attached creature gains +*/+8, Infect, Reach, Vigilance.
The 12th Bowman's strength is equal to the
amount of -1/-1 counters on the battlefield.