Hello! I'm back to going though all the moves (on M now). Due to the length of postings, this is now the 4th post
Magnetic Flux is in dire need to be revised.
Firstly, the Move Target claims to affect 1 adjacent Pokemon, but looking at both Bulbapedia and Smodon shows the move affects All Allies, including User, which makes more sense given the effect
Secondly, the Effect fails to note by how much Defense and Special Defense is raised. A simple correction for this would be:
Magnetic Flux raises the Defense and Special Defense of all ally Pokémon with the Plus or Minus abilities by one stage, including the user.
Additional minor corrections:
Mat Block's Move Target claims to be on a single adjacent Pokemon, but this is conttradicted by other sites, as well as the move's description. The move should actually affect User and all Allies
Memento's Effect is a bit poorly worded, and not up to the same standard as other Effects. A clearer description would be "The user of this move faints, lowering the Attack and Special Attack of the target by 2 stages as it does so". Note: this is sort of similar to another post from 4 years ago, where you said you'd expand this move's Effect, so I guess this is also a reminder.
Mist's Effect is a bit poorly worded, and not up to the same standard as other Effects. A clearer description would be "The user and its allies are protected from stat reduction for 5 turns".
In addition, the Effect on the moves page https://pokemondb.net/move/all should be changed to "User and its allies' stats cannot be changed for 5 turns."
Pay Day's Effect is very sparse and does not convey the effect of the move, simply saying "A small amount of money is gained after the battle resolves." This Effect should be altered to something like this "The user deals damage, and coins fall to the ground equaling the level of the user at the end of the battle. These coins will be collected by the trainer at the battle's conclusion, assuming they win. This effect can be repeated multiple times, and the effects will stack. In addition, notes should be added about the effects of items/abilities that multiply the effects of Pay Day (like Amulet Coin)
Pollen Puff's Effect is a copy of its description and does not give great details on the effect toward an ally. An improved Effect would read as such "Pollen Puff's effect depends on which Pokemon is targeted. If it targets a foe, the user deals damage and has no secondary effect. If it targets an ally, the user heals the target for up to 505 of its max HP"
Psychic Terrain's Effect mentions that it boosts Psychic type moves, but does not mention by how much (50%)
Moonlight's and Morning Sun's, and Synthesis' Effects are very sparse on information and definitely need updating. Both moves Effects should be changed to something akin to the following (they have the same effect)
The user recovers HP based on the weather.
If the weather is Harsh Sunlight, the user regains 2/3 of its max HP
If the weather is Clear/No Weather, the user regains 1/2 its max HP
If the weather is any other weather, the user regains 1/4 its max HP
Note: This correction is similar to another made 4 years ago.