Ertarra, Worldcrafter

Menace
Pioneer - At the beginning of your end step, you may return an untapped land you control to its owner's hand. If you do, search your library for a land card and put it onto the battlefield tapped. Then shuffle your library.
Whenever a land enters or leaves the battlefield under your control, create a 0/1 colorless totem creature token with "At the beginning of your upkeep, gain 1 life."