Maximum Excavator

This Skill can be used if all of the monsters in your Deck are Wyrm Type. [REQUIREMENT] None [EFFECT] Choose 1 face-up monster on your field. This turn, that monster gains 100 ATK, and if there were 13 or less cards in your Deck when you used this Skill, it inflicts piercing battle damage. If you have activated "Peaks of Blisstopia" this turn, you can also add 1 Level 3 or 10 monster from your Graveyard to your hand. (You can only add a Maximum Monster once per Duel.)