New Ur-Dragon Deck

Ok so I’m new to deck building and I watched a vid on an Ur dragon deck and kept most of his cards but I made some ajustments to fit price and I wanted a few dragons that I really liked so I would like some of you guys opinion. Is it balanced? Is there something that I should adjust to improve it? All feedback is helpful https://manabox.app/decks/Xz5glK_RT1aVLLkf204lCQ