Neverseen

Hidden agenda
Society 13 ( This spell can only be cast if you
control 13 or more creatures. When it enters
the battlefield, attach it to 13 creatures.)
When creatures you control attack, blocking
opponent must block all creatures you attack with.
Attached creatures can't be blocked.
{w}{u}{b}: Attach this enchantment to target
creature you don't control. It's activated abilities
cost the same converted mana cost, but in
colorless mana.