This team is based around bulky DD Mega Charizard X sweep. The first thing I noticed when I saw the core was Clefable's ability to counter other Dragon Pokemon as well as its ability to support Charizard with Heal Bell. This is excelent as it can provide me with a way right off the bat of luring in and taking out Thundurus. Some people depend on Thundurus as a last resort check to setup sweepers like Charizard X by Thunder Waving it before it has a chance to break through the rest of the team. However, with Clefable, I can force Thundurus to come in and T-wave, kill it off with Dragon Claw, and then later Heal Bell with Clefable and attempt for a sweep again. Wish also helps in this way, as it can be passed to Charizard in order to fuel a secondary sweep. Next we have the real star of the show, Sub Toxic Aegislash, which I believe is the natural best Pokemon for this core. It does a fantastic job of luring in Pokemon like Hippowdon (and to a lesser extent, Mandibuzz), which threaten to prevent a Charizard sweep and cripple them with Toxic. Once they have been sufficiently worn down, sweeping with Charizard becomes much easier. It's honestly such an amazing Pokemon right now, and has been very useful in SPL (I believe Masterclass used it against C05ta). Skarmory provides the team with Stealth Rock, and it helps to check certain threats that give the team trouble, mainly things like Azumarill, Tyranitar, Scarf Landorus, Garchomp, Mega Gyarados, and Mega Pinsir. However, the team was extremely weak to Mega Charizard Y, so I added Latias, which not only checks it, but also provides the team with Defog support. I had considered Healing Wish in the last slot, but I wanted Latias to have as much survivability as possible, since removing rocks is highly important. But I wanted a secondary check (Pursuit is a bitch) to both Keldeo and Charizard Y, and the team was pretty weak to Greninja as well, so I thought Azumarill was a nice addition. With Assault Vest, it's able to take a lot of hits, and with Wish Support from Clefable, it can take multiple hits throughout the match. Heatran is a major pain for this team and Azumarill is usually my main switch in for it.
Also based nicknames imo :]