I'm happy to see changes in the game, but I hesitate to call this a "new" change. What's unique to fire is that it has the most aggressive attack, but the weakest defense out of all the elements. Likewise with gravity, it has the highest defense, but the most moderate attack power in the game. That's the distinction as I see it. It's an aesthetic decision to borrow themes from other elements . Gaining life makes sense for light and life cards; they complement each other. Fire and gravity are close, but not that close; not as close as earth say. The creatures and cards specific to each element should have defining features otherwise there wouldn't be much sense picking one element over any other. The game becomes diluted this way. While it isn't a significant point right now, with this particular card, it will have an effect overall and in the long-term. I'd much rather see more element specific changes like quintessence, bonewall/graveyard/soul catcher, antimater, mutation, miracle, etc. etc. All of these provide something unique to each element. This still leaves plenty of room for other abilities that could be shared between two or more elements, like life gain or spell damage. However, a card like overdrive just doesn't seem like it should be one of these. In a way, it sorta kills rage potion, which was supposed to be fire's unique alchemy card. Now it's made redundant. That's about all I have to say on this topic. Hope this card makes it into the game soon, in whatever form.
I disagree.
Logically, if you accellerate a creature, and if it hits you, you'll get more damage, but that creature will be more vulnerable.
Thematically, it's still a different strategy. You're swapping hp for attack power CONSTANTLY, but slowly (Overdrive is too fast IMO), so it's like making use of Gravity's high hp, with a Gravity spell...
And fire is more about destruction, not growth, as I see it. Lava golem grows with Earth, and Forest spirit, with water, not to mention the fact that a steam machine doesn't have to use fire, it only needs heat (fire is only one form of energy)... Rage pot is that, RAGE, destruction, lose of control, not growth. Earth, Life, Gravity grow (Earth and Gravity because of mass, that in this case is used to attack, and life because life tends to grow), but fire's main attribute is to destroy... So having 3 out of 5 growths in the game seems too much to me. I would actually prefer having at least one life-based growth.
And rage pot is still effective. +2|-1 is slower than +5|-5 (I disagree with Overdrive, as I said), and you can't stack Accelerations. But Rage pot will be less popular between Gravity decks because of the fact that a mono is more stable than a duo.