How to

Potion Effects and IDs

Effect (player) (effect) (time) (strength)

The potion effect strength can go as high as 250 but by then it usually cancels itself out, so control MATTERS!
/effect <player> <effect> [seconds] [amplifier]


Effect number list (Add this to the <effect> section)

1 SpeedIncreases walking speed
2 SlownessDecreases walking speed
3 HasteIncreases mining and attack speed
4 Mining FatigueDecreases mining and attack speed
5 StrengthIncreases melee damage
6Instant HealthHeals entities, damages undead
7Instant DamageDamages entities, heals undead
8 Jump BoostIncreases jump height and reduces fall damage
9 NauseaWobbles and warps the screen
10 RegenerationRegenerates health over time
11 ResistanceReduces most damage
12 Fire ResistanceImmunity to fire, etc.
13 Water BreathingPrevents drowning
14 InvisibilityGrants invisibility
15 BlindnessImpairs vision
16 Night VisionNegates darkness
17 HungerIncreases food exhaustion
18 WeaknessDecreases melee damage
19 PoisonInflicts damage over time (but can’t kill)
20 WitherInflicts damage over time (can kill)
21 Health BoostIncreases maximum health
22 AbsorptionAdds damage absorption
23SaturationRestores hunger and saturation
24 GlowingOutlines entities (can be seen through blocks)
25 LevitationFloats entities upwards
26 LuckIncreases chances of high-quality loot
27 Bad LuckReduces chances of high-quality loot

So if you wanted to add speed to the player, you would do this:

/effect <Your Name> 1 <number of seconds> <what level of speed you want>

All of these status effects can be removed by drinking milk. Singleplayer users with cheats enabled and operators in Multiplayer servers can use command /effect with the time of the effect set to 0 or /effect <playername> clear to achieve the same goal.

If you have a server, such as RPG or fighting, or arcade,
you can use command blocks (ID 137) to give people potion effects for certain situations.


If you have cheats enabled you can obtain command blocks with the following: /give (player) 137



More on this complicated topic:
Thanks to simonh2000 for putting this together!
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    1. After the duration, put a number representing the power. Example (/effect Notch 1 50 2) That represents that Notch will get Speed II (or 2) for 50 seconds. Your welcome

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