An intent like steel would repel even lightning attacks......or so it is said.
[G guardian] (Usable when both fighters' vanguards are grade 3 or greater, and the number of face up G guardians in your G zone if three or less) -Opponent Turn's Guard Step-[Choose a "HEAL" from your hand, and discard it] Call this card to your (GC) from face down.
[AUTO]:[Choose a card from your hand, and discard it] When this unit is placed on (GC), if the number of face up cards in your G zone is one or more, you may pay the cost. If you do, this unit gets [Shield]+10000 until end of that battle.
[CONT]:This card is also of all clans and nations.