Aphro Teambuilding:
- Always have an odd number of hp with some exception (cause damage of rocks, substitute...). Ex: If u have a victini with 400 hp it will die after 4 rocks (25% of hp/ 100 + 100 + 100 + 100 = 400), well if u have a victini with 401 it will live with 1hp so you can use your victini 4 times (it's the same with 399, 397, 401, 395...), with a pokemon like hoopa you can use it 9 times, if u have an even number of hp you only can use it 8 times. It's the same with the substitute, if you have 401 you can use sub 4 times and you will live with 1hp if not you can only use sub 3 times.
- Offtanks (offensive tanks) and leech seed damage. An offtank is a mon who has a high number of hp and atk or sp atk (tyranitar atk offtank, heatran sp atk offtank). Ex: 252 SpA Life Orb Latios Surf vs. 248 HP / 4 SpD Heatran: 242-286 (62.8 - 74.2%)/ 252 SpA Life Orb Latios Surf vs. 0 HP / 128 SpD Heatran: 216-255 (66.8 - 78.9%). Well if you have a heatran with 248 hp, 252 spa, 4 def and 4 spd surf will do against you 62 - 74% of your hps, if you have 128 def, 128 spd and 252 spa it will do 66 - 79%. Apparently the first distribution of the evs seems better cause the surf does 5% less. Well if you have an steel monotype (we are talking about heatran) i'm sure that you will have celestela or ferrothorn with leech seed. The point is, if you have less hp the leech seed will heal + your heatran cause if he has 400 and he drain a mons with 400 hp it will recover you 12.5%, but if you are 128 both defenses it will recover + % cause you have less hp than him. Heatran has a nice core with skarmory and ferrothorn and if you run 128 both defenses with leech seed ferro or cele + heatran with protect you will have a nice coverage and your heatran will have more longevity (you are recovering + hp's than you are losing). In the other hand, if an enemy leech seed your heatran and you are 128 both defenses you will have less hp so he will recover less hp 2. Ex: Heatran 128 both defenses and 252 spa (protect, toxic, lava plume and X), Ferrothorn 248 hp 252 def 8 sp def (leech seed, protect, toxic and off move like knock off, power whip or gyro ball) and celestela 248 hp 8 def and 252 spd (you can youse 2 mons with leech seed, it's ok in steel cause your counters are water, ground... and celestela can learn a lot of moves you have to covers whats left with it, gigadrain, flamethrower, air slash, heavy slam, hp ice, eq...).
- Coverage: you need pokemons to cover the damage against the pokemon that you are weak. Ex: dark type is weak against bug, fairy and fight so you need pokemons who can tank them, ex of dark core: mandibuzz has a nice hp (423) and a lot off def and sp def, it can take bug and fight moves and learn defog, whirlwind..., mega sableye has a lot of both defenses and he has resistence against bug and inmunity against fight, this mon is great cause he has magic bounce (this pokemon blocks certain status moves and bounces them back to the user) and can learn a lot of great moves and you will tank fairy moves with muk who has a lot of hp's and spd, it has resistence against fight and bug moves 2. In the other hand you need attacks that can pokemons who resists you (fairy and fight). Mons who can hit fairy: bisharp, muk... Mons who can hit fight: greninja with protean and paranormal, sharpedo with psychic fangs, hoopa...
- Movesets: depends on the type of pokemon that you have you have to learn some moves or other. Deffensive mon (mons who can tank damage and contribute with utility). Ex: Cradily 248 hp 8 def and 252 with recover, gigadrain, stealtch rocks and tóxic/mirror coat (leftovers). Offtank mon (mons who can tank damage and has a nice damage 2). Ex: Tyranitar 248 hp 132 atk and 128 (-speed + atk or sp atk) with stone edge, dark pulse, fire blast and crunch with assault vest (it's good on rock monotype).
- Playstyles: the different types have different styles of play between them. Psy hasn't enough good walls against dark, ghost and bug so it's a offensive monotype, in the other hand steel has a stall and boost playstyle cause they are bulky, slow and has a nice coverage of secondary types. Dark is a balanced type who has nice coverages and good sweepers.