Burning, Swift, Mage, Flare attack
If last card played was a Mage
Attack: N
If last card played was a Burning:
Attack: N
N = Total cost of last card played
Always
Mage tokens: +30
This can be truncated as:
Burning, Swift, Mage, Flare attack
Mage tokens: +30
If last card played was a Mage or Burning
Attack: N
N = Total cost of last card played
At 7/7/7, this is far too inexpensive to be Swift on top of dealing damage with no cap AND causing Flare Attack. Tone this down significantly or tone it down a bit while making it Rare.