Landorus (Incarnate Forme)

Great League: N/A

Landorus currently is not eligible in Great League due to its high CP. This might change in the future if it would be released in Research Breakthroughs, or through some other methods of obtaining it at a lower level.

Ultra League: 2.5 / 5

Landorus struggles quite a bit in Ultra league due to its high ATK stat and consequently poor bulk. The lack of a relatively cheap charge move (energy-wise) can result in inconsistent performances against the meta, with various matchups won or lost based on its ability to reach its charge move in time. Access to Earth Power is valuable in countering common Steel-types in this league, while Outrage provides a difficult niche against Dragon-types if unshielded. While both charge moves together provide very relevant coverage in this league, their high energy costs discourages their use together, requiring Rock Slide to bait shields for smoother results. 

Master League: 3.5 / 5

Landorus's access to a fairly reliable, nigh unresisted charge move combination and decent overall stats makes it a strong contender in the Master League. It breaks Steel-types and simultaneously threatens the Flying-types that they are often paired with, making it a solid corebreaker. Its typing grants it useful resistances to Ground, Electric, and Fighting, allowing it to fend off Zacian (especially non Play Rough ones), and non Dragon Tail Groudon. This form of Landorus sets itself apart from its Therian counterpart with its more reliable and straightforward moveset, making it stronger in extended fights, but worse for hit and runs.

Landorus's frailty and reliance on charge move damage can lead it to struggle against shields despite Mud Shot's energy generation. Its stats are also nothing to write home about, and can be overwhelmed by strong neutral hits from the likes of Giratina and Mewtwo. Super-effective hits can pretty much just delete Landorus, so Kyogre, Mamoswine, and Palkia are huge threats. Landorus also faces stiff competition from its Therian forme due to the latter's much higher ATK stat and a moveset with a higher reward potential.