The second ability costs X, and it lets you Destroy each nonland permanent with converted mana cost X whose controller was dealt combat damage by Steel Hellkite in that turn
If I were to make a tier list based on what happened in Portland I'd say the top 6 in no particular order would be as follows: Simic Ouroboroid Bant Airbending Jeskai Control Sultai Reanimator Izzet Lessons Omniscience decks I'm excited to see what actually unfolds given this hyper-dynamic flow of changes in the Standard format
The quality of the higher quality printed blue core cards is not visibly developing between the generations
Recommended Commanders: Commodore Guff, Brenard, Ginger Sculptor, Marchesa, the Black Rose Exchange of Words I was surprised when this card was suggested by a friend
And this was at a time when even normal banding was the cause of headaches
The restrictions are too great and even if you do, for some reason, want to fuse these together it's too expensive for too small an effect