Wendy, The Bereaved

Wendy, The Bereaved enters the battlefield with flower counter on it.
Whenever spirit dies under your control you may
exile it instead. When you do put flower counter
on Wendy, The Bereaved.
Whenever non-artifact non-spirit creature dies
you may remove flower counter from
Wendy, The Bereaved. When you do create blue
2/2 spirit creature token.