"Pokmon Type Chart: Strengths, Weaknesses, and Effectiveness Explained"
If the player's Net Ocean has run out of cards, regardless of whether they won or lost the battle, discard all other cards from the Digimon box such that only the Level III Digimon card remains (this is treated as the Digimon reaching its lifespan)
When this card is selected as an attack target by your opponent's monster, select 1 Level 7 or higher Dragon-Type monster from your Graveyard, Special Summon it, and switch the attack target to that monster
The card goes on to mention some kind of singing fairy, before boasting about the dragon's sheer power, whose attack and defense are replaced with question marks
In the announcement article Wizards notes that these cards are frustrating to encounter, and at worst, combo with wheels to do some nefarious things. Going forward, it looks like less restrictive card draw is a priority
It goes past monster effect protection to tribute all face-up monsters on the field