Entry Hazards

In Diamond & Pearl, there are several attacks that do damage on the Pokémon when they are switched in as opposed to when you actually attack. These are very handy to cause damage to your opponents before you even get a chance to attack and to stop them from casually switching out without them having any drawbacks to it. This page is set out to show the true extent of these attacks and how much damage they do

Spikes

Spikes is the original Entry Hazard move. As it holds the Ground Type, it does have the problem that it does not affect Pokémon of the Flying Type or Pokémon with the Levitate Ability

The damage that is given through Spikes is determined by the amount of layers that you place:

Amount of Layers HP Taken
1 Layer 1/8 of Opponent's Maximum HP
2 Layers 1/6 of Opponent's Maximum HP
3 or more layers 1/4 of Opponent's Maximum HP

However, on top of this, it is possible for the opponent to dispell the Spikes if the opponent uses the move Rapid Spin

Spikes
Toxic Spikes

Toxic Spikes is the only Entry Hazard attack that does not afflict damage on the Pokémon straight away. Instead, it inflicts them with the Poison Condition. It does not affect Pokémon of the Flying Type, Steel Type, Poison Type or Pokémon with the Levitate Ability

The damage that is given through Spikes is determined by the amount of layers that you place:

Amount of Layers Effect
1 Layer Poison's Opponent
2+ Layers Badly Poison's Opponent

However, on top of this, it is possible for the opponent to dispell the Toxic Spikes if they send out a Poison Type Pokémon

Toxic Spikes
Stealth Rock

Stealth Rock's damaging methods are rather unique. Instead of doing a set amount of damage for the amount of layers given, it instead is based on the opponent's type. The attack is a Rock Type attack so the damage is based upon the opponent's Weakness to it. For a full chart, click here

Type Effectivness Damage
x0.25 Effective 1/32 of Max HP (3.125%)
x0.5 Effective 1/16 of Max HP (6.25%)
x1 Effective 1/8 of Max HP (12.5%)
x2 Effective 1/4 of Max HP (25%)
x4 Effective 1/2 of Max HP (50%)


This shows that Stealth Rock can easily help defeat the opponent with little effort if they use a Pokémon such as Charizard or Articuno

Stealth Rock
Sticky Web

Sticky Web is a new entry hazard and creates a web around the ground which will slow down any Pokémon touching it. If Pokémon are sent out in battle, their Speed gets reduced by one stage. This is only effective on Pokémon that touch the ground so those with the Flying-type or the Levitate ability cannot be affected. Like Stealth Rocks, you can only release one Sticky Web in a battle

Sticky Web
G-Max Steelsurge

Another entry hazard is only available through the G-Max Move of Gigantamax Copperajah: G-Max Steelsurge. This move does damage and sets up a new entry hazard. This entry hazard works in a similar manner to Stealth Rock but this time has got the Steel-type meaning it affects the target Pokémon on switch in

Type Effectivness Damage
x0.25 Effective 1/32 of Max HP (3.125%)
x0.5 Effective 1/16 of Max HP (6.25%)
x1 Effective 1/8 of Max HP (12.5%)
x2 Effective 1/4 of Max HP (25%)
x4 Effective 1/2 of Max HP (50%)


G-Max Steelsurge