The application here to lands means you have a lot of extra utility if you end up with too many lands in your hand, but the lands themselves tend to be a bit slow
Ob Nixilis Reignited + Ob Nixilis, the Hate-Twisted There was a period of Magic history when every other new planeswalker card was modeled after Ob Nixilis Reignited, to the point where 5-mana planeswalkers all kind of blended together
I count: 38 lands and Ornithopter of Paradise, Burnished Hart, Palladium Myr, Scaretiller, Solemn Simulacrum, Geode Golem, Oblivion Sower, Ugin, the Ineffable, Everflowing Chalice, Sol Ring, Mind Stone, Thought Vessel, Unstable Obelisk, Worn Powerstone, Hedron Archive, Thran Dynamo, Forsaken Monument, Dreamstone Hedron, Darksteel Monolith 57 mana
Whilst being a vehicle version of the cloned creature might seem like a downside, that stops it from being removed by board wipes, or other sorcery-speed effects
Her other ability isnt half bad either, giving you a mana back right away and threatening other Planeswalkers a little bit
