Gunkan Suship Shirauo-class Carrier (Common)

2 Level 4 monsters
If this card is Xyz Summoned: You can apply these effects based on the material used for its Xyz Summon.
* 'Gunkan Suship Shari': Draw 1 card.
* 'Gunkan Suship Shirauo': Add 1 'Gunkan' Spell/Trap from the Deck to the hand.
You can only use this effect of 'Gunkan Suship Shirauo-class Carrier' once per turn. While there is a face-up card in the Field Zone, your 'Gunkan' monsters Special Summoned from the Extra Deck cannot be destroyed by your opponent's card effects, also they gain ATK equal to their original DEF.