Disney Lorcana is a trading card game where players build decks of cards with their favorite Disney heroes and villains
That would have cost us the awesomeness that was Perilous Research - Hatching Plans Storm, but that's the fine line between "pretty cool and fine Storm deck" and "kinda just bullshit Storm deck" for you
Fully filled cards will limit ring space
This is important, since you need to build up its power over time
Still, the Dash ability of Ragavan, Nimble Pilferer means that it is a constant threat that your opponent needs to be aware of, and that in it of itself is powerful as it will force your opponent to sequence in such a way to respect the potential Dash attack
And you can play it at instant speed - you can hold up mana and cast this just before your turn, leaving your opponents with nothing to defend themselves