If your Deck has many EARTH monsters in it, "Gigantes" would make a good addition to your arsenal. It cannot be Normal Summoned or Set, but can be Special Summoned by removing from play 1 EARTH monster in your Graveyard. This Rock-Type monster has 1900 ATK points, making it a valuable attacker, but its effect is what makes it a great card.
When it is destroyed as a result of battle, all Spell and Trap Cards on the field are destroyed. If your opponent has a valuable Spell or Trap Card, they will be reluctant to attack your "Gigantes", leaving you free to use it to attack their monsters, or to use as a Tribute next turn.