Yveltal is once again proving to be one of the most difficult Pokémon to handle in UPL VII. With Dusk Mane Necro and Ultra Necro in the uppermost echelons of the tier, Yveltal is opted for a lot in team structures in order to pressure those two. However, a major trend in its advantage is players running less SR Groudon and more and more SR Dusk or even SR Ultra, which is a huge viability boost for Yveltal since none of those particular sets carry the necessary coverage to pressure Yveltal, making it a more solid check to both Necrozma forms. It is in general nigh impossible to abuse Yveltal, which is also shown in countless scenarios throughout UPL.
Another plus to its viability is the omnipresence of Arceus-Ground and the choices said Pokémon is forcing players to make in their team structures (e.g. SR SD Groudon usage has plummeted while in turn Eruption usage has skyrocketed, Spd Groudon is running Toxic a lot more often, SR Ultra Necro has emerged in order to win the hazard war against Arceus-Ground through an elevated speed tier, Spd Dusk Mane is seeing a lot of usage, Water Spout Kyogre is run a lot more often to punish Arceus-Ground defogging your hazards and to abuse it in general et cetera). Not only does Yveltal provide a useful Ground immunity to a lot of cores and team structures, it is also one of the few Pokémon around that can somewhat force Arceus-Ground out after pivoting into its Judgement.
All in all, I’d definitely say Yveltal is reaching the peak of its viability ceiling once again and is a lot more comparable to those in S rather than to those in A+.
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