I nominate Zapdos for flying (S-rank)
Railgun (Zapdos) @ Leftovers
Ability: Pressure
EVs: 248 HP / 252 SpD / 8 Spe
Calm Nature
IVs: 0 Atk
- Discharge
- Toxic/Heat Wave/Hidden Power Ice
- Defog/Toxic/Heat Wave/Hidden Power Ice
- Roost
Zapdos is undoubtedly Flying's
BEST Special Wall. With a bulk of 90/85/90, it is an excellent special wall due to it being neutral to Electric, one of flying's main weaknesses. Discharge is Zapdos's most useful move, with a 30% chance of paralysis and coming from a STAB of BST 125 SpAtk, it hits quite hard, and the paralysis dents sweepers and set-ups and creates an opening for Togekiss and Landorus-T to hit. Heat Wave hits hard on most things that are weak to it, and with Discharge/Heat Wave combo, Zapdos can wall Steel teams if it doesn't carry ToxicTran and Excadrill (Mega mawile can be 2hko-ed if predicted perfectly upon switch-in). Toxic can destroy bulky walls such as Meloetta and Zapdos, which are quite a pain to deal with in Flying, and then Zapdos can Roost-stall. HP Ice can be used as a gimmick set to counter Landorus-T, which can otherwise force Zapdos to switch out and the ever-annoying toxic stallin' Gliscor. Defog is used to remove Stealth Rocks which are a huge threat to flying. And the last slot is left for Roost which is the perfect recovery which Zapdos, as a wall needs.
In addition to the awesome bulk this has, it creates an excellent synergy with Skarmory creating the best core of mono flying. Very few mons can destroy this core (Kyurem-B, LO Greninja, Entei, Tyranitar), but what other cores are there to wall these threats? (Those threats are known as the banes of flying, I can tell how to wall/weaken them if you insist).
Togekiss is a great special wall as well, but it's weak to electric which makes it more fragile than Zapdos. Also, Zapdos has a BST of 100 in Speed, which can make it faster than most walls and it also has one of the best ability a wall can have,
PRESSURE, which can PP stall most walls (I once ended up in a 1v1 with my Zapdos and
Acast 's Mega Venusaur and I pp stalled him, I don't think he remembers though). Anyways, it is
HIGHLY recommended in flying teams, and the only reason I think it's not used is because some people doesn't want to be
generic.
Therefore, I nominate Zapdos for Flying as S-Rank