B.E.S. Tetran – Elemental Energy (Ultimate Rare)

When this card is Normal Summoned, put 3 counters on it. This card cannot be destroyed by battle. If this card attacks or is attacked, remove 1 counter from this card at the end of the Damage Step. If you cannot, destroy it. Once per turn, you can remove 1 counter on this card to destroy 1 Spell or Trap Card on the field.