Eclipse, The Soulbinder

When Eclipse enters the battlefield, exile X
creatures until it leaves the battlefield. Place a
binding counter on each card exiled this way.
Equipped creature gains "Whenever this creature blocks or becomes blocked by a creature that
shares a type with creatures exiled with a binding counter on them, exile that creature and put a
binding counter on it." Whenever a creature
becomes unequipped from Eclipse, exile that
creature and put a binding counter on it. Equip 3
{x}{x},{t}Sacrifice Ecli