(This was originally just Doom Desire, but I added a few things about Future Sight, too)
Doom Desire is a "Steel" type move. It has 5 base PP, 120 base damage, and 85% accuracy. It damages 2 turns after the turn it is used. So it goes something like this:
Turn 1:
You Doom Desire
They do something
Turn 2:
You do something
They do something
Turn 3: You do something
They do something
They take damage from Doom Desire
Future Sight follows the same pattern, except it has 80 base power and 90% accuracy, along with having 15 PP.
There is no randomization in their damage. No matter how many times you use Doom Desire / Future Sight on the same Pokemon, it will always do the same damage.
Doom Desire is based off Attack. Max Attack Adamant Choice Band Jirachi does significantly more damage than one without a Choice Band, which does more than minimum Attack Modest.
It is based on the Attack at the time of using Doom Desire. If I use Doom Desire, then they Charm me 3 times, it would do the same damage as if I were Swaggered 3 times after using Doom Desire.
Future Sight is based on Special Attack. The same rules apply.
Doom Desire is also affected by Defense. 0 Defense, 0 HP Blissey (neutral nature) is OHKOed by Choice Band Adamant Jirachi. Max Defense Bold 0 HP takes 59% damage. This is the maximum damage predicted by the damage calculator, indicating that the randomization part of the battle damage formula is skipped entirely. A Choice Band Adamant Jirachi will deal 383 points of irresistible damage to any Pokemon in the game if it targets 252 Defense Bold Blissey.
It is based on Defense at the time of choosing the attack. If you target Doom Desire on level 1 Chansey, and then they switch to a level 100 Skarmory, Doom Desire will OHKO Skarmory. On Netbattle, however, this is bugged, so that it uses the Defense at the time of striking, meaning you can boost damage by using Doom Desire, and then using Screech before it hits.
Future Sight is based on Special Defense. the same rules apply.
Neither of them get STAB. I lowered Jirachi's attack to equal that of a Choice Band Smeargle, and both did 169 damage to the same Blissey.
Begin Turn #6
Heracross used Endure!
Heracross braced itself!
---------------------------------
Heracross took Doom Desire's attack!
(12 damage)
Heracross fainted!
Doom Desire is neutral to everything. Nothing is weak to it, and nothing resists it.
Tyranitar took Future Sight's attack!
(32% damage)
Max Attack Adamant Choice Band Jirachi Doom Desire does 36% damage to max HP, max Defense Impish Skarmory.
Max Special Attack Modest Mewtwo does 11% damage to max HP, max Special Defense Calm Blissey. However, standard Blissey has no Special Defense. Future Sight from the same Mewtwo then does 14% to max HP, 0 Special Defense neutral natured Blissey. By comparison, Psychic does ~20%
Damage comes after Leftovers.
They do not activate Shell Bell.
They hit Shedinja.
Doom Desires cannot be stacked. If Doom Desire is used, it will fail until the previous Doom Desire attacks.
Doom Desire cannot work if Future Sight is in the queue, and vice-versa.
Future Sight cannot be stacked.
They cannot be Protected against.
Destiny Bond does not work with either.
Say my team is Smeargle and Jirachi in 2v2. The enemies are Geodude and Charizard. Smeargle uses Doom Desire on Geodude. If Jirachi uses Doom Desire or Future Sight on Geodude, it will fail, but if it's used on Charizard, it will work. Smeargle can use Doom Desire / Future Sight on Geodude, and then use it on Charizard next turn without fail.
/edit: added some stuff
//edit: Changed title to match rest of forum
///edit: Added Future Sight
////edit: This is all in Advance on Netbattle, so if this doesn't match in-game, tell me.
\edit: 2v2 info
\/edit: Updated info on when it factors in Defense
Doom Desire is a "Steel" type move. It has 5 base PP, 120 base damage, and 85% accuracy. It damages 2 turns after the turn it is used. So it goes something like this:
Turn 1:
You Doom Desire
They do something
Turn 2:
You do something
They do something
Turn 3: You do something
They do something
They take damage from Doom Desire
Future Sight follows the same pattern, except it has 80 base power and 90% accuracy, along with having 15 PP.
There is no randomization in their damage. No matter how many times you use Doom Desire / Future Sight on the same Pokemon, it will always do the same damage.
Doom Desire is based off Attack. Max Attack Adamant Choice Band Jirachi does significantly more damage than one without a Choice Band, which does more than minimum Attack Modest.
It is based on the Attack at the time of using Doom Desire. If I use Doom Desire, then they Charm me 3 times, it would do the same damage as if I were Swaggered 3 times after using Doom Desire.
Future Sight is based on Special Attack. The same rules apply.
Doom Desire is also affected by Defense. 0 Defense, 0 HP Blissey (neutral nature) is OHKOed by Choice Band Adamant Jirachi. Max Defense Bold 0 HP takes 59% damage. This is the maximum damage predicted by the damage calculator, indicating that the randomization part of the battle damage formula is skipped entirely. A Choice Band Adamant Jirachi will deal 383 points of irresistible damage to any Pokemon in the game if it targets 252 Defense Bold Blissey.
It is based on Defense at the time of choosing the attack. If you target Doom Desire on level 1 Chansey, and then they switch to a level 100 Skarmory, Doom Desire will OHKO Skarmory. On Netbattle, however, this is bugged, so that it uses the Defense at the time of striking, meaning you can boost damage by using Doom Desire, and then using Screech before it hits.
Future Sight is based on Special Defense. the same rules apply.
Neither of them get STAB. I lowered Jirachi's attack to equal that of a Choice Band Smeargle, and both did 169 damage to the same Blissey.
Begin Turn #6
Heracross used Endure!
Heracross braced itself!
---------------------------------
Heracross took Doom Desire's attack!
(12 damage)
Heracross fainted!
Doom Desire is neutral to everything. Nothing is weak to it, and nothing resists it.
Tyranitar took Future Sight's attack!
(32% damage)
Max Attack Adamant Choice Band Jirachi Doom Desire does 36% damage to max HP, max Defense Impish Skarmory.
Max Special Attack Modest Mewtwo does 11% damage to max HP, max Special Defense Calm Blissey. However, standard Blissey has no Special Defense. Future Sight from the same Mewtwo then does 14% to max HP, 0 Special Defense neutral natured Blissey. By comparison, Psychic does ~20%
Damage comes after Leftovers.
They do not activate Shell Bell.
They hit Shedinja.
Doom Desires cannot be stacked. If Doom Desire is used, it will fail until the previous Doom Desire attacks.
Doom Desire cannot work if Future Sight is in the queue, and vice-versa.
Future Sight cannot be stacked.
They cannot be Protected against.
Destiny Bond does not work with either.
Say my team is Smeargle and Jirachi in 2v2. The enemies are Geodude and Charizard. Smeargle uses Doom Desire on Geodude. If Jirachi uses Doom Desire or Future Sight on Geodude, it will fail, but if it's used on Charizard, it will work. Smeargle can use Doom Desire / Future Sight on Geodude, and then use it on Charizard next turn without fail.
/edit: added some stuff
//edit: Changed title to match rest of forum
///edit: Added Future Sight
////edit: This is all in Advance on Netbattle, so if this doesn't match in-game, tell me.
\edit: 2v2 info
\/edit: Updated info on when it factors in Defense