Well at least this ones less of a dragon typal card and more of an artifacts-matter piece
The real power of this card is in the big old chunk of text though, which reads, Whenever Scourge of Valkas or another Dragon enters the battlefield under your control, it deals X damage to any target, where X is the number of Dragons you control. This basically means that if youve got one Dragon, you can deal one damage to something, two Dragons is two damage and so on
The stock list is filled with all these cute little synergies which add depth and complexity to the list -- cast two spells per turn, legendary creatures matter, tokens matter -- but Y'shtola is very clear on what she wants to be doing, and that's chaining together high mv noncreature spells, and this deck simply refuses to do that
The question is whether it's better to use Solemnity in this role over Anafenza, Kin-Tree Spirit or Melira, Sylvok Outcast, and while the answer is generally no (mostly because Anafenza and Melira can be found with Chord of Calling and Collected Company while Solemnity cannot), it's worth keeping in mind because, as an enchantment, Solemnity is much harder to kill than a random Grizzly Bear
