Synthesis

grass status

Heals the user by half its max HP. Affected by weather.

Stats

PowerNone (status move)
AccuracyNever misses
PP5
Priority0
Categorystatus
Targetuser
Healing50% of max HP
IntroducedGeneration II

In game description

The user restores its own HP. The amount of HP regained varies with the weather.

Pokemon that learn Synthesis

Showing the first 40. Availability varies by server, since some restrict move tutors or TMs.

Using Synthesis in Cobblemon

Synthesis deals no damage, so its value is entirely in what it sets up. Status moves are usually the difference in a close gym fight, and sleep or paralysis also make a wild Pokemon far easier to catch.

Check the type chart before relying on it, and look up specific targets in the Pokedex where dual-type multipliers are already worked out.