Effects:

Thunder: Strikes fake lightning  (write - Thunder)
Particle: Plays a particle effect at the dying players head and feet (write - Particle:PARTICLE_NAME|amount)
Break: Plays the block break animation at the dying player's head and feet (write - Break:BLOCK_ID)
Fireworks: Plays a Firework effect (write - Fireworks:TYPE:RED=GREEN=BLUE)

For sounds: write SOUND_NAME|Pitch

All the Particle's:
   HUGE_EXPLOSION
    LARGE_EXPLODE
    FIREWORK_SPARK
    TOWN_AURA
    CRIT
    MAGIC_CRIT
    SMOKE
    MOB_SPELL
    MOB_SPELL_AMBIENT
    SPELL
    INSTANT_SPELL
    WITCH_MAGIC
    NOTE
    PORTAL
    ENCHANTMENT_TABLE
    EXPLODE
    FLAME
    LAVA
    FOOTSTEP
    LARGE_SMOKE
    CLOUD
    RED_DUST
    SNOWBALL_POOF
    DRIP_WATER
    DRIP_LAVA
    SNOW_SHOVEL
    SLIME
    HEART
    ANGRY_VILLAGER
    HAPPY_VILLAGER

Firwork Types:
    BALL
    BALL_LARGE
    BURST
    CREEPER
    STAR
