Im optimistic that this dragon will see play, likely in Blue controlling decks and the UR tempo Dragons deck alongside Galazeth Prismari and Goldspan Dragon
This card can be good for a decent amount of reasons, but the main focus is its access to 300 HP
The 7th Continent: BGG Promo Cards
Core mechanics for blues include card draw and card selection to keep options open
The theme's Quick-Play Spell and Normal Trap cards are its main board presence, and provide a variety of effects, including recovery ("RESCUE!", "ALERT!"), negation ("CONTAIN!"), removal ("EXTINGUISH!"), protection ("REINFORCE!"), and follow-up ("EMERGENCY!")
It gains 500 attack for each monster your opponent controls, as well as being able to weaken your opponents monsters by banishing HEROs from your graveyard