Xelora, Telluric Defiler

Whenever a land enters the battlefield under
your control, create a 1/1 black and green Pest creature token with "When this creature dies,
you gain 1 life." This ability triggers only once
each turn.
When Xelora, Telluric Defiler dies, search your
library for a basic land card, put that card onto
the battlefield tapped, then shuffle.