Viridian Emissary

When this creature dies, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

When this creature enters, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

, : Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

, Sacrifice this creature: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

, , Sacrifice this creature: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.