Titania, Protector of Argoth turns lands leaving your battlefield for the graveyard into 5/3 Elemental tokens. Her entry ability also returns a land from your graveyard directly to the battlefield, giving a green lands deck immediate recovery and a continuing payoff for sacrificing lands. Fetch lands and utility lands become sources of creatures as well as mana or other effects.
A fetch land returned by Titania can be sacrificed again to find another land and create an Elemental. Sylvan Safekeeper offers a different pairing, sacrificing lands to protect creatures while Titania turns those costs into attackers. Zuran Orb can convert lands into life and tokens, although sacrificing too many lands without a recovery plan can leave the deck unable to continue developing.
Life from the Loam, Crucible of Worlds, and additional land-play effects help rebuild the mana base after repeated sacrifices. The Elementals have substantial power but only three toughness, so they benefit from evasion, haste, or protection when the deck wants to turn them into a quick finish. The land engine should support those attacks rather than merely create tokens with no safe route through blockers.
Titania cares about lands moving from your battlefield to a graveyard, not lands discarded or milled from other zones. Exiling a land also does not create the same trigger. Build around reliable sacrifice events and land recovery so the card generates repeatable value while your mana resources remain healthy enough to support the rest of the deck.
