There's basically 2 ways, as I see it, to make a Uril deck.
1) A very fast, powerful voltron deck dedicated to getting Uril out as quickly as possible, powering him up with efficient auras, and landing quick, efficient general-damage kills.
2) A slower, more entertaining enchantress deck.
I've gone with the second option here. In fact, I've gone so hard into the second option that every nonland card in this entire deck has the word enchantment and/or aura in them.
Still WIP since I have to go to sleep, wake up, and catch an airplane within 7 hours, but that's the gist. Uril isn't really the focus, more of a reliable aura target that can be one of several wincons. But personally I'm hoping to win via 20 2/2 firebreathing dragons.
Uh, well it still has to be playable, rabid wombat is god awful.
sylvan library is fine but doesn't really have that much to do with the enchantress/auras theme. Mark of Fury was close but only once per turn makes it weaker than the on-demand bounce auras imo.
Anyway, played the deck tonight and it was decent. Not having any instants with an annoyance but luckily the group was pretty casual. Despite my best intentions to make it enchantressy, most of my wins came from slapping runes of the deus on the big man and bowling people down, so I think the voltron-centered version is just straight-up better. Oh well. Gave it my best. 2/5.