Let us consider the Rush usage of this card for a moment.

Theoretically I can out damage my opponent in the early game at the cost of being out damaged in the mid game. This is the whole concept of a rusk strategy. During this portion where I am out damaging my opponent, I don't care about damage I sustain so long as my opponent is damaged more on average. So my rush tools include short term out damaging effects and ways to move the goal closer at the cost of my own hp. To put this in more concrete terms:

Ball Lightning + Cremation + Knight(2

) + Lava Destroyer(5

+ Earth Mark)

That is 4 cards(and my mark) to deal 85 damage in the first 5 turns while I suffer 30 damage from myself and whatever my opponent can muster in the first 5 turns. If I can deal 15 damage in 7 cards faster than my opponent can deal 70 damage in 11 cards then I win.

In the oversimplified unrealistic case where I got 2 Knights and 2 Lava Destroyers(plus

) on the first turn and nothing else all game:

I would deal 80 damage in 3 turns and 108 damage in 4 turns all while suffering 36-48 damage + whatever my opponent can muster in the first 3-4 turns. While this second example is unrealistic(Drawing 4 pairs) it does highlight just how fast the strategy will rip thorough both life totals.

So the "low cost, high attack, also damages controller" card is a very good fit for Fire and for rush decks provided the balance(see 15 in 7 vs 70 in 11 example above) is appropriately tweaked.

However I think the comparison to Minor Phoenix 4

|2

is enough to show that this card is currently underpowered.