The Effect Command

The /effect command is a command normally used in maps and minigames.

Overview
The /effect command can add and remove potion effects from your player.

Syntax
/effect [level]

/effect clear

Explanation
Both player values are the player you want to add or remove effects to, respectively. The effect value is the effect you want to give, while the level value is the level of the effect plus 1. For example, doing /effect RandomGuy123 strength 1 would give RandomGuy123 strength 2.

Trivia

 * Can be used to get non-potion effects.
 * Only way to acquire a lot of high level effects.