move 1: Blizzard
move 2: Bug buzz
move 3: Brick Break
move 4: Substitute / Earth Power
item: Life Orb
ability: Compound Eyes
nature: Naive / Rash
evs: 200 Atk/ 56 Satk / 252 Spd
Syclant has the ability to tear through many of the most common walls in D/P. Compound Eyes provided Syclant with an extremely high power 99% accurate STAB in the form of Blizzard. Brick Break deals with Blissey and will 2HKO 90% of the time. Bug buzz provides a strong STAB that deals with many opponents. Substitute can be used if you do not want to risk mispredicting, which will often force Syclant to switch out. It is also useful to absorb Thunder Waves from Blissey and Cresselia. If you do use substitute than Super Power becomes an option as it can 2HKO Blissey with less EVs. Those EVs give you the same Atk as a max Atk and Satk Syclant with the trade off of 10% recoil from every attack, so all of these damage calcs
If this set does not have sufficient rapid spin support, it will soon fall to passive damage. To combat this you can use ice shell over Compound Eyes, but only do this if you use an Abomasnow to set up hail or switch to the significantly weaker ice beam.
name: Swords Ant
move 1: Swords Dance
move 2: Ice Shard / Ice Punch
move 3: X-Scissor
move 4: Brick Break / U-Turn
item: Life Orb / Expert Belt
nature: Adamant / Jolly
evs: 4 Def / 252 Atk / 252 Spd
This is a full physical version of Syclant. It's attack reaches astronomical levels after a Swords Dance. Ice Shard takes care of anything that thinks it can switch in on the Swords Dance and out speed for a KO. Ice Punch provides a more reliable Ice STAB.
Fire fang, Thunder fang, Stone edge, Night slash or Shadow claw could be used over Brick Break / U-Turn. Fire fang dents Forretress, who would other wise wall you, after a SD. Thunder fang is your best bet against Gyarados. Stone edge (or Rock slide if you don’t like the poor accuracy and want to take advantage of the flinch chance) has great coverage and can 1KO some Pokemon you would otherwise have problems with Pokemon after a SD. Night slash or Shadow claw can beat down Dusknoir and bulky psychics. Superpower is not an option on this set as the attack drop conflicts with sword dance.
move 1: Ice Beam / Blizzard
move 2: Bug buzz
move 3: Super Power / Focus Blast
move 4: Earth Power
item: Choice Specs
ability: Mountaineer / Compound Eyes
nature: +Satk -Def / Timid / Modest
evs: 4 Def / 252 Satk / 252 Spd
This set has the ability to do massage damage to most of the OU metagame, provided you predict right. If you run the low accuracy Blizzard and Focus Blast then use the Compound Eyes ability with heavy Rapid Spin support, as Syclant wants to have the ability to switch in and out freely with this set. If you don't want such a high-maintenance Poke than using running Mountaineer, Super Power and Ice beam allows you to still dent Blissey and also be immune to SR. Keep in mind that both Super Power and Focus Blast are unable to 2HKO without SR
Stone Edge is a good option for dealing with the likes of Moltres and Articuno. Super Power is unable to 1HKO Blissey even with max Atk, so isn't of much note other than on the Choice Specs set, or to 2HKO with less EVs. Thunder Fang and Earth Power will 1HKO Gyarados and Heatran respectively, but don't be tempted to use them on anything that isn't 4x weak as STAB Blizzard or Bug buzz will usually do more. Most of the time its incredibly overpowered STABs will cover it better than a single attack that hits Super Effective against a certain Poke. Choice Band is also an options if you don’t want to have to set up your Physical sweeper, but Syclant isn't build for repeated switch ins. Choice Scarf makes it a decent lead.
Neutral Natured Syclant with max Atk and Life Orb is never guaranteed to 1HKO Blissey with Break Break, but 200 EVs Provide a very reasonable chance and a guaranteed KO with SR in play. Any EVs Leftover from your main form of offence should go into Spd. Always make sure that Syclant can survive two switch ins to SR if running Compound Eyes. This means NEVER give it four Hp EVs. Either eight or none.
Syclant can tear through some of D/P's prestige walls, but is extremely high maintenance. Its typing is a mixed bag. It has two wonderful STABs for an offensive Poke, but is hindered by a horrible SR weakness. Mountaineer takes care of this, but leaves it using a weaker STAB. If you can keep Syclant in good condition then it will be a great asset to your team.
Infernape can come in on Blizzards and Bug buzz and threaten with Mach Punch. Tentacruel is a good overall counter, but like Infernape dies if Syclant is carrying Earth Power. If the Specs set is being run then Blissey is a good counter, or it can come in on anything other than Brick Break and Substitute on the Mixant set. Priority moves, or Pokes that out speed Syclant can deal very heavy damage once they get in.
Syclant relies on both having extremely powerful and accurate STAB moves and immunity to SR to survive. Taking either one of these away will weaken it significantly. If it is running the Compound Eyes ability then getting down SR and preventing it from being spun away will stop Syclant in it's tracks. If Syclant is using Abomasnow's hail for 100% Acc Blizzard then your own weather changer will hinder it slightly.