Lotus Field enters the battlefield tapped.
When Lotus Field enters the battlefield, sacrifice two lands.
t: Add three mana of any one color.
Quote from master_of_the_universe »If only Tamiyo prevented self-sacrifice...
That would be broke AF. I say that less about lands like this and more from for Liliana, Dreadhorde General.
Turn 4: Land + Kiora, Behemoth Beckoner (untap this) + Bioessence Hydra
If I'm not missing anything, this sounds great to me. And hexproof makes it pretty solid.