How to evolve Phantump in Cobblemon.
Phantump evolves into Trevenant when traded to another player, or when you use a link cable on it.
Evolution line
PhantumpWhat Phantump needs
1 path
TrevenantLink cable or trade
no extra condition
Moves it learns on evolving
Shadow Claw
These are offered the moment the evolution completes. Decline them and you have to relearn them later.
Is it worth it
Phantump nowghostgrass309
Trevenantghostgrass474
Base stat totals, from the Cobblemon 1.7.3 species files.