Eclipse, The Soulbinder

When Eclipse enters the battlefield, exile X
creatures until it leaves the battlefield.
Equipped creature gains "Whenever this creature blocks or becomes blocked by a creature that
shares a type with creatures exiled by Eclipse, exile
that creature until Eclipse leaves the battlefield." Whenever a creature becomes unequipped from Eclipse, exile that creature until Eclipse leaves the battlefield. Equip {3}
{x}{x},{t},Sacrifice Eclipse: Create Eclipse Unbound.
X must equal the number of creatures e