Credit to Angry2
Somehow approved by Eevee General and The Immortal
One of the main aspects of Pokémon is evolving. Since the very beginning, back in RBY, we saw our Pokémon evolve to the next stage of what we call "evolutionary line". They give Pokémon new moves/abilities/typing and also stats! But what if we could cross these evolutionary lines? That's what you can do in this metagame!
You can switch it by nicknaming your mon the name of the line you want. It gives the new stats and access of a maximum of 2 moves from the evolutionary lines' movepool. Abilities are replaced by the final form abilities. If the evolution gets a new secondary typing, the cross-evolved Pokémon will get it too (or replace its old second type).
Complicated? Want an example? Ok!
Klang is a Stage 2 that can evolve into a Stage 3, so it can "cross-evolve" with a Stage 3 Pokémon such as Gallade. Gallade has +30 HP, +90 Attack, +30 Defense, equal Special Attack, +60 Special Defense and +30 Speed than Kirlia. Its abilities are Steadfast and Justified, and has access to Close Combat and Knock Off. It also gains a secondary Fighting type. As a result:
Gallade (Klang) @ Lum Berry
Ability: Justified
New Stats: 90/170/125/70/145/80
New typing: Steel/Fighting
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Shift Gear
- Gear Grind
- Close Combat
- Knock Off
Klang has now access to two extra moves to balance its horrendous natural movepool. Steel-type grants it a lot of set-up opportunities, aided by a 90/125/145 bulk and a monstrous Attack to wreak havoc.
Rules:
This is playable on the ROM server! Thanks urkerab!
Somehow approved by Eevee General and The Immortal
One of the main aspects of Pokémon is evolving. Since the very beginning, back in RBY, we saw our Pokémon evolve to the next stage of what we call "evolutionary line". They give Pokémon new moves/abilities/typing and also stats! But what if we could cross these evolutionary lines? That's what you can do in this metagame!
You can switch it by nicknaming your mon the name of the line you want. It gives the new stats and access of a maximum of 2 moves from the evolutionary lines' movepool. Abilities are replaced by the final form abilities. If the evolution gets a new secondary typing, the cross-evolved Pokémon will get it too (or replace its old second type).
Complicated? Want an example? Ok!
Klang is a Stage 2 that can evolve into a Stage 3, so it can "cross-evolve" with a Stage 3 Pokémon such as Gallade. Gallade has +30 HP, +90 Attack, +30 Defense, equal Special Attack, +60 Special Defense and +30 Speed than Kirlia. Its abilities are Steadfast and Justified, and has access to Close Combat and Knock Off. It also gains a secondary Fighting type. As a result:

Gallade (Klang) @ Lum Berry
Ability: Justified
New Stats: 90/170/125/70/145/80
New typing: Steel/Fighting
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Shift Gear
- Gear Grind
- Close Combat
- Knock Off
Klang has now access to two extra moves to balance its horrendous natural movepool. Steel-type grants it a lot of set-up opportunities, aided by a 90/125/145 bulk and a monstrous Attack to wreak havoc.
Rules:
- Ubers banlist and clauses + Evolutionary clause: this prevents two or more Pokemon on a team from cross-evolving with the same Pokémon. OU's Baton Pass clause is in effect as well. You cannot have more than one Pokémon with the move Baton Pass and you can't pass Speed and other stats simultaneously.
- You can "cross-evolve" your Pokemon by naming them after the intended Pokemon. So for example you nickname your Pontya "Dugtrio," giving it +25 HP, +25 Attack, +25 Defense, +15 Special Attack, +25 Special Defense, and +25 Speed, and access to Sand Veil, Arena Trap, and Sand Force.
- Evolution is limited so that Stage 1, 2, and 3 are matched accordingly. Ponyta is a Stage 1 Pokemon and can evolve into any Stage 2 but it cannot evolve into a Stage 3, so you couldn't name it Venusaur or Charizard, but you can name it Ivysaur or Charmeleon. Same goes for Ivysaur not having access to Dugtrio, but it does has access to Alakazam and Gengar.
- Cross-evolving with Shedinja (Wonder Guard. The ban does not include Ninjask, which is legal) is banned. Further bans will be considered if needed as the metagame evolves.
- Pokémon that cannot evolve cannot cross-evolve either.
- Using an evolutionary line with a Pokémon with a mega won't give you access to the respective Mega Stone, signature items (Thick Club, Light Ball) or Eviolite.
- Cross-evolved Pokémon get the abilities from the line they chose. So for example, crossing Haunter with Alakazam, you get Inner Focus, Magic Guard or Synchronize as possible abilities.
- However, getting Huge Power, Pure Power and Shadow Tag via cross-evolution is banned.
- You can't go over base 255 or under 1 on any stat. Combinations that produce Pokémon with negative base stats or over 255 are banned.
Q: How do you know if a Pokemon can cross-evolve into another?
A: First you need to find out what stage it is. For the sake of this OM, Pokémon are broken into three stages: 1, 2, & 3. Each stage represents where a Pokémon belongs in its evolutionary line. Some lines have 3 stages and some have 2. Stage 1 Pokémon can only evolve into Stage 2 Pokémon, and Stage 2 Pokémon can only evolve into Stage 3 Pokémon. If a Pokémon doesn't evolve at all under normal circumstances, it cannot evolve in this OM either.
Stage 1 Charmander is the first in its line.
Stage 2 Charmeleon comes after Charmander and is second in its line.
Stage 3 Charizard comes after Charmeleon and is third in its line.
Stage 1 Mankey is the first in its line.
Stage 2 Primeape comes after Mankey and is second in its line. No Pokemon come after Primeape in this line.
Examples:
Stage 1 Charmander
Stage 2 Primeape ✔
This is a legal evolution because Charmander is a Stage 1 and can evolve under normal circumstances.
Stage 1 Girafarig
Stage 2 Primeape ✘
This is an illegal evolution because Girafarig cannot evolve under normal circumstances.
Stage 2 Ivysaur
Stage 3 Charizard ✔
This is a legal evolution because Ivysaur is a Stage 2 and can evolve under normal circumstances.
Stage 2 Primeape
Stage 3 Charizard ✘
This is an illegal evolution because Primeape cannot evolve under normal circumstances.
tehy's version
A: First you need to find out what stage it is. For the sake of this OM, Pokémon are broken into three stages: 1, 2, & 3. Each stage represents where a Pokémon belongs in its evolutionary line. Some lines have 3 stages and some have 2. Stage 1 Pokémon can only evolve into Stage 2 Pokémon, and Stage 2 Pokémon can only evolve into Stage 3 Pokémon. If a Pokémon doesn't evolve at all under normal circumstances, it cannot evolve in this OM either.








Examples:



This is a legal evolution because Charmander is a Stage 1 and can evolve under normal circumstances.









tehy's version
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