I put this on a different forum aswell, but haven't got an answer on that yet, so yea, all help is welcome

I don't know much about timers, but what I just coded in gives me 3(6) bugs, but I don't know why or how. I tried a lot already, like making different do_functions for it, but it still didn't work. It probably is something easy, but yea...I can't figure it out lol.
I'll explain the idea for the code first:
I want to make it so that skills take up some time to use and their opponent can counter it with their skills.

I get the following errors:

magic.c: In function 'spell_water_dragon_blast':
magic.c:7338: error: syntax error before "ch_ret"
magic.c:7340: error: case label not within a switch statement
magic.c:7344: error: syntax error before "ch_ret"
magic.c:7347: error: case label not within a switch statement
magic.c:7351: error: syntax error before "ch_ret"
magic.c:7354: error: case label not within a switch statement

The code of the skill:

ch_ret spell_water_dragon_blast( int sn, int level, CHAR_DATA *ch, void *vo )
{
    CHAR_DATA *victim = (CHAR_DATA *) vo;
    int dam;

    level	= UMAX(0, level);
    level	= UMIN(150, level);
    dam  = number_range( 1, 7 )*number_range( 50, 75 );

    act( AT_MAGIC, "You start performing seals", ch, NULL, NULL, TO_CHAR);
    act( AT_MAGIC, "$n starts performing seals", ch, NULL, NULL, TO_CHAR);
    add_timer( ch, TIMER_NONE, 1, ch_ret spell_water_dragon_blast, 1 )
    ch->alloc_ptr = str_dup( staticbuf );
   case 1:
    act( AT_MAGIC, "...ox tiger bird monkey rat ox...", ch, NULL, NULL, TO_CHAR);
    act( AT_MAGIC, "...ox tiger bird monkey rat ox...", ch, NULL, NULL, TO_ROOM);
    DISPOSE( ch->alloc_ptr );
    add_timer( ch, TIMER_NONE, 2, ch_ret spell_water_dragon_blast, 2 )
    ch->alloc_ptr = str_dup( staticbuf );
   case 2:
    act( AT_MAGIC, "You yell: '...Bird! Suiton Suiryuudan no Jutsu!'", ch, NULL, NULL, TO_CHAR);
    act( AT_MAGIC, "$n yells: '...Bird! Suiton Suiryuudan no Jutsu!'", ch, NULL, NULL, TO_ROOM);
    DISPOSE( ch->alloc_ptr );
    add_timer( ch, TIMER_NONE, 3, ch_ret spell_water_dragon_blast, 3 )
    ch->alloc_ptr = str_dup( staticbuf );
   case 3:
    act( AT_MAGIC, "A large dragon made completely of water rises up and charges at $N", ch, NULL, NULL, TO_ROOM);
    act( AT_MAGIC, "A large dragon made completely of water rises up and charges at $N", ch, NULL, NULL, TO_CHAR);
    DISPOSE( ch->alloc_ptr );
    if ( IS_AFFECTED( victim, AFF_SHARINGAN ) )
    {
	if( victim->pcdata->learned[sn] )
	{
	return damage( ch, victim, dam, sn );
	}
        if( victim->mana pcdata->learned[sn] = 20;
        victim->mana -= 150;
	act( AT_FIRE, "Your sharingan starts spinning at a fast rate!\r\n", victim, NULL, NULL, TO_CHAR);
	act( AT_YELLOW, "You just copied Water Dragon Blast!\r\n", victim, NULL, NULL, TO_CHAR );
	act( AT_FIRE, "$n's sharingan starts spinning!\r\n", victim, NULL, NULL, TO_ROOM );
	return damage( ch, victim, dam, sn );
    }

    if ( saves_spell_staff( level, victim ) )
	dam /= 2;
    return damage( ch, victim, dam, sn );
}

I haven't spent much time looking at skills but your problem seems to be that you aren't using case statements properly.
The general syntax of a switch is like this

switch (var)
{
     case 1:
     stuff...
     break;
     case 2:
     stuff...
     break:
     default:
     stuff...
     break;
}

where if var == 1 it does the stuff after case 1.

I'm pretty sure the syntax error is from the way you use add_timer.

add_timer( ch, TIMER_NONE, 1, ch_ret spell_water_dragon_blast, 1 );

Should be:

add_timer( ch, TIMER_NONE, 1, spell_water_dragon_blast, 1 );

The previous post is also correct. A switch as far as I can tell isn't even declared. Follow the form he stated.