[Wesley221]

pawn Код:

SetTimer("Messages", time here, 1);
forward Messages();
public Messages()
{
    new rand = random(5);
    if(rand == 0) return rand +1;
    switch(rand)
    {
        case 1: SendClientMessageToAll(C_GREEN, MESSAGE1);
        case 2: SendClientMessageToAll(C_GREEN, MESSAGE2);
        case 3: SendClientMessageToAll(C_GREEN, string);
        case 4: SendClientMessageToAll(C_GREEN, MESSAGE4);
        case 5: SendClientMessageToAll(C_GREEN, MESSAGE5);
    }
        return 1;
}

This would do it