Lluwen, Imperfect Naturalist

$0.31

Lluwen is a two-mana elf that mills four cards when it enters, then lets you put a creature or land from among them back on top of your library. Its activated ability costs {2} plus three black-or-green hybrid mana, taps, and asks you to discard a land card. You get a 1/1 Worm for every land card in your graveyard, discarded one included. The deck wants lands in the yard fast, so it plays self-mill, landfall payoffs and ways to sacrifice or discard lands, which makes each activation bigger than the last.

In the recorded games, which were few, Lluwen's worm activations were the main threat, and a handful of activations produced a wide board early. Some lists added landfall drain from Retreat to Hagra. The enter-the-battlefield mill was also used for setup, putting cards like Eternal Witness back on top to draw next. Other builds leaned into +1/+1 counters and proliferate. The deck needs several turns of lands piling up in the graveyard, so graveyard exile and sweepers that clear the worms set it back.