Not at all actually. I think standard in general is too cute at the moment, but this deck is excellent. Uro is just an unreal magic card. Your deck either bashes people's heads in, or stall into an alternate win. It's great! If you would like them, these would be my tweaks:

1.) Growth Spiral over Ilysian Caryatid. Plays better with Rielle(power) and song of creation, makes all your ramp cantrips.
2.) 3 copies of Rielle, 3 copies of Song. You go off with either, redundant copies aren't super useful, and one finds the other.
3.) 4 Uro (the extra copy sill gains 3, draws a card, plays a land, adds to the escape cost of another? No reason not to play the 4th.)
4.) If you want a fifth escape threat that's a beater (voracious typhon), consider Ox of Agonas instead as a 1 of. A little smaller but synergizes with your deck.
5.) All scrylands, no lifegain lands. With the increased card draw, you likely hit uro more often, thus gaining more life more often. Also, with most cards cantripping and a lot of cards putting lands into play, the scry 1 can often happen before you cast another cantrip, turning them all into soft opt's. Combined with Thassa's oracle, your consistencey will be through the roof.
6.) Consider a 1-2 of a card that gives a creature haste. Surprise uro attack, Rielle with a lot of power, or Ox + haste means many games can be ended on the spot if your opponent is not careful. Maximize Velocity, Escape Velocity, Footfall Crater, and Cavalier of Flames are all very interesting options for this.