You dont know which other cards are coming your way in the draft and youre more likely to draft mediocre cards because your brain wants to make the multicolor card work if youre going to focus on a specific color combination way too early
The thing is, though, its not the only crossover weve had
A bunch of small haste creatures like Rabbit Battery and Bomat Courier go a long way with Ognis at the helm, even if you have to wait a turn to use the Treasure you create
If you revealed a Dragon card or controlled a Dragon as you cast Draconic Roar, Draconic Roar deals 3 damage to that creature's controller
Elixir of Immortality is very low value and very imprecise
That's a lot of support for an archetype, Liberator, Urza's Battlethopter is probably the strongest of the 3, but this lets you dump out Eldrazi on your opponents end step and then attack immediately, which is pretty dangerous