Not in vanilla Cobblemon. Needs the AllTheMons datapack (or my Cobblemon Survival Guide modpack, which includes it). Same in AllTheMons x Mega Showdown.
Best Spawn Conditions
AllTheMons datapack
Rarity
ultra-rare
Biomes
Swamp
Weight
3.00
Level range
50 – 70
Time
any
Weather
any
Context
grounded
EV yield
3 Special Attack
Best Poke Snack Berry(s)
Hondew
Can see sky
true
Presets
Natural, Wild
Properties
Has at least 3 perfect IVs
Spawn multipliers
0.5x if it is raining