Mythical Spawning
Generation 1-3
Mew - Jungles during the day
Celebi - Right Click Ilix Shrine with a GS Ball (Found in forest biomes)
Jirachi - Mountainous at Dawn/Morning
Deoxys - End Highlands & Freezing Forests in the afternoon
Generation 6
Generation 4
Phione - Breeding Manaphy
Manaphy - Warm & Lukewarm Ocean
Darkrai - Roofed at night
Shaymin - Flowery in the morning
Arceus - Play the Azure Flute near a Timespace Alter located in Desert Hills
Generation 7
Magearna - Dark Forest and Pale Garden during the day inside a woodland mansion
Marshadow - Mesa at night
Zeraora - Savannas in the afternoon Y level 90+
Meltan - Spawns when putting netherite scrap in a Mystery Box
Melmetal - Evolves from Meltan when given 400 iron nuggest (~5 blocks ; Can put in blocks and ingots aswell)
Generation 5
Victini - Savannas during the day with clear weather
Keldeo - Lakes and Rivers during the day
Meloetta - Flowery at night
Genesect - Mountainous Forests at night
Generation 8 & 9
Zarude - Jungles at night
Pecharunt - Not released by Pixelmon Mods
Diancie - Mountainous underground during he morning
Hoopa - Desert in the afternoon
Volcanion - Arid and Volcanic dawn/morning on a liquid floor