Ur-Bog

Kicker {3} (You may pay an additional {3} as
you cast this spell.)
{t}: Add {b}.
If Ur-Bog was kicked, untap it, and create an 0/1
Urborg Skellington creature token with, "Kicker {3} and {b}: Regenerate Urborg Skellington. If
Urborg Skellington was kicked, it enters with a
+1/+1 counter on it."