The fact that she flips into a Planeswalker just by drawing three cards, which, by the way, her Clue helps you do, makes her an absolutely fantastic card in competitive formats
You could say there's a token effort at an Equipment subtheme ( 7 equipment and 1 support card Goldwardens' Gambit) but it's a stretch
Though narrow, it's one of the best cards for the situations that warrant it
Blue Dragon's Lightning Breath ability cannot target the same creature multiple times
We expect that Wizards will make some effort to change up its system now that fans are aware of it, if only to prevent sneaky players abusing its flaws, finding undervalued, powerful cards they can pop into their decks
Red has plenty of tools for doing that, with damage-based sweepers like Pyroclasm and Cinderclasm