This is a deceptively powerful card. The reason why cards like Crimson Dragon are so powerful is that they deal damage on the turn they are played. Even if you kill the dragon, you've still taken 12 damage (for 10 )
This card is 14 | 16 damage for 9 .
There are counters (shields mostly) but it might need to be toned down a little. I like OldTrees' poison suggestion.
Greetings jawdirk
very cool your comparisons, but have decks that this card will make no effect as the light for example, and I also already won numerous games without need target on creatures of the opponent, (sundial, shields, deck-speed)
comparison crimison dragon: if avenger, is as fire, I continue use crimison, are 12 damage only in once.
Deck of fire are fast with great damage, if it avenger is as fire, until seraphim would be more feasible.
card price: well, 9
, is almost the price of a dragon, and I don't meeting many dragons lately (except black), players are preferring fast cards, another fact
is that many use devourers, earthquake, discord and S-Focus, preventing speed to put a letter of 9.quanta.
had a tournament three weeks ago that I could not put a mere bone-shield (3 devourers) and oponete was just a classic monodark, if I put shield, would have won.