Fuse this monster with "Sangan" while they are both on the field to make "Sanwitch". 2 monsters will be chosen, 1 with less than 1500 ATK and 1 with less than 1500 DEF, to add to your hand.
Alternatively, you can use them to summon "Starving Venom Fusion Dragon". Your hand will be given two new Monsters, and it will destroy your opponent's Special Summoned Monsters when it is wiped out. Its ability to essentially transform into one of the opponent's Monsters is also a plus.
Activating this effect is very easy, because this card only needs to be send from the field to the Graveyard in order to activate its effect (e.g. it doesn't have to be destroyed), but pay attention: if this card does not go to the Graveyard (ie. banished, discarded from your hand, Deck, etc.), this effect doesn't activated.
This card can help fulfill the requirements for "Dark Renewal". By using it as the needed Spellcaster for "Dark Renewal", "Witch" and an opposing monster can be send to the Graveyard to Summon a more powerful DARK Spellcaster, which will also trigger the effect of "Witch", allowing yourself to search out another monster.
A +1 advantage can be gained with this card and "Wonder Wand". Simply send this card equipped with "Wonder Wand" to the Graveyard via the effect of "Wonder Wand" to not only draw two cards, but search out a monster.