Azusa, Lost but Seeking lets you play two additional lands on each of your turns, normally bringing the total to three. That can move a lands deck far ahead on mana when it has enough lands available. Her strength comes from increasing the rate at which you deploy resources, rather than searching for those resources herself.
Life from the Loam can return three lands to hand, supplying another turn of land plays. Crucible of Worlds offers direct access to lands in the graveyard, allowing a fetch land to be played and sacrificed repeatedly while land plays remain. Exploration can add another allowance, making the total number of permitted land plays larger when both permanents are active.
Landfall payoffs convert the extra development into more than mana sources. Lotus Cobra can produce immediate colored mana, while Avenger of Zendikar grows its Plants as the lands arrive. A draw engine such as Aesi, Tyrant of Gyre Strait can help refill the hand and maintain the sequence over several turns.
Azusa does not allow land plays during an opponent’s turn, and lands put onto the battlefield by spells are separate from the land-play allowance. If she leaves, you lose her additional allowance for any land plays you have not yet made. She is also a small creature that needs support to survive. Include her when land density, recursion, or card flow can keep three land plays productive; otherwise, a ramp spell that finds a land immediately may do more for an empty hand.
