digimon bt16 booster box Beginning Observer BT-16 Japanese — Japan2UK Digimon Card Game: Hackers' Slumber

The line about casting The Indomitable from your graveyard is mostly flavor text, and this card isnt so powerful that youll suddenly see a massive surge in aggressive blue decks in Cube, but it does move the needle, and I would expect to see it in any Cube supporting Pirates as a creature type as well

Angels because you want to cast/attack with Angels, ramp because you want to be able to consistently cast your higher mana cost (4+ CMC) Angels and repeatable draw because you want to keep having Angels in your hand to cast

This also means your valuable trading cards are safe from harmful chemicals that could damage them in the long run

Ali may only use this move as soon as the card is played