The Founders Legacy

When the Founders Legacy enters the Battlefield
create a Founder of Shifting Token. When this
Card, or a Shapeshifter enters the battlefield,
exile every non-Token Shapeshifter until this
card leaves the Battlefield, create a Founders
Copy Token for each creature exiled this way.
When this Card leaves the battlefield, exile
every Shapeshifter Token.
7: Exile The Founders Legacy.