Toxic

Transform

Tri Attack

Transform changes your Pokémon's type(s), statistics (except HP), attacks, and appearance to match those of the current enemy. Your Pokémon retains its new form until the battle is over, or until it switches away.

The accuracy of this attack is unaffected by Evade/Accuracy modifiers.

The effects of any stat modifiers are copied by Transform, including changes to Evade and Accuracy. Thus, if the enemy has used Minimize several times, your Pokémon will enjoy a lower chance of being hit when it copies that enemy. (Fortunately, Transform always has a 99.6% chance of success; in this respect it is exactly like Swift.) However, prior modifications to the Transformer's stats are negated by the copying process. A Mew that has used Swords Dance, for example, will not enjoy a boosted Attack if it subsequently Transforms into another Pokémon.

Status changes are not copied by Transform; however, the Speed reduction associated with paralyzation is copied, as is the Attack reduction associated with burns.

Regardless of how many attacks the copied Pokémon had, your Pokémon loses the ability to Transform once it has done so. Each copied attack has only 5 PP.

Note that a Transformed Pokémon retains its own Level. This has at least two important implications for combat when there is a Level disparity between your Pokémon and the enemy being copied. First, a L10 Mew that Transforms into a L25 Pinsir should not get into a Seismic Toss battle! In general, calculated attacks based on Level may be a boon to the copier or the victim, depending on their relative Levels.

Second, even for Physical and Special attacks, remember that the attacker's Level is an important variable in the Battle Damage Formula. If your L26 Ditto copies a L50 Articuno, it will not do as much damage with Fly or Blizzard, despite having the same Attack and Special.

Despite being a Normal type attack, it is effective against Ghost Pokémon.

Ditto
Mew