Beyond that, it has one of the most useful and efficient draw abilities Ive seen in a while
These finish the tango land and bicycle land cycle for Orzhov, making it a really attractive pickup (It also has a Land Tax, and a Flickering Ward holy valuetown!)
If you somehow control Phenomenon Investigators and no choice was made for it (perhaps because another permanent on the battlefield became a copy of it, or it was manifested and later turned face up), it has neither of the two triggered abilities, no matter how much you want to believe (or doubt)
Simply put, in the Draft format of Magic: The Gathering, each participating player picks up three Draft Boosters
When The Ur-Dragon does eventually hit the board, it turns the rest of your Dragons into powerful draw engines and threatens to put some of Magic: the Gathering's most devastating threats on the table
After all, how are you supposed to keep ahead in cards when you're playing them all onto the board