Since youll want as many cards to choose from as possible, I typically prioritize setting up a value engine early on
Thunderbreak Regent Thundermane Dragon Thundermaw Hellkite Tiamat Tiamat's Fanatics Twinflame Tyrant Two-Headed Dragon Two-Headed Hellkite Tyrant of Kher Ridges Tyrant of Valakut Tyrant's Familiar Ureni of the Unwritten Ureni, the Song Unending Utvara Hellkite Vaevictis Asmadi Vaevictis Asmadi, the Dire Vampiric Dragon Velomachus Lorehold Velukan Dragon Vengeful Ancestor Verix Bladewing Viashivan Dragon Volcanic Dragon Voracious Dragon Vrondiss, Rage of Ancients Warmonger Hellkite Wasitora, Nekoru Queen Worldgorger Dragon Wrathful Red Dragon Young Red Dragon Ziatora, the Incinerator Zodiac Dragon Zurgo and Ojutai
Time Spiral block's storyline had us revamping the power level of the Planeswalkers to allow us to make them a bit more approachable (characters with god-like powers were hard to relate to), and Future Sight was about peeking into the mechanical future of Magic
(This effect lasts indefinitely.) : This creature loses flying
Mega Flare Mega Flare can make a dragon when you need one, and pick off a handful of other threats, often making this a 3-for-1 card or better