If first non-Lemur creature spell with flying you cast on your turn doesn't have generic mana in its cost, the cost will not be reduced and the cost reduction will not apply to the next spell you cast that turn
Proxy cards should not be made to be indistinguishable from their MTG card counterparts, and if they are, youre getting into counterfeit territory and that is a slippery slope
The White, Blue, and Black (or Esper) deck for Final Fantasy is built around Y'shtola, Night's Blessed, who incentivises you to cast multiple noncreature spells with mana value 3 or greater in a single turn to drain your opponents and draw cards along the way
cards is a distinct characteristic of the game, reflecting its unique design philosophy and target audience
The Hydra is a more generally powerful card because if your opponent isnt playing creatures, you can still make a huge threat