Super Cosmic Hero, X-carivou (G-BT07/018EN) [Glorious Bravery of Radiant Sword]

[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 card with "Heal" from your hand, and discard it] Call this card to your (GC) from face down. [AUTO]:When this unit is placed on (GC), if your opponent's attacking unit's [Power] is 30000 or greater, this unit gets [Shield]+10000 until end of that battle. Then, you may choose a card from your hand, and discard it. If you do, choose one of your vanguards, and it gets [Power]+4000 until end of turn.