As with any deck you build, the Ursulas Return Amber & Amethyst Starter Deck has its hurdles
Illustrated by Daniel Ljunggren Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
Flare of Fortitude Fleecemane Lion Fleecemane Lion Gaea's Gift Heroic Intervention Indominus Rex, Alpha Insidious Mist Inspirit, Flagship Vessel Jirina, Dauntless General Join Shields Karametra's Blessing Kathril, Aspect Warper King Darien XLVIII Lightshield Array Linvala, Shield of Sea Gate Loran's Escape Majestic Myriarch Mutational Advantage Odric, Blood-Cursed Odric, Lunarch Marshal Overprotect Perennation Plaza of Heroes Rayami, First of the Fallen Restoration Magic Saved by the Shell Selective Adaptation Selfless Safewright Shadowspear Shadowspear Shay Cormac Smuggler's Surprise Soulflayer Spectacular Spider-Man Tamiyo's Safekeeping The Fire Nation Drill Tom Bombadil Tyrant Guard Tyvar's Stand Urborg Scavengers Wretched Bonemass Yuan-Ti Scaleshield
You cant sacrifice her to herself, allowing you to get a 3 drop back
The mana generated by the last ability can't be spent to activate abilities of Eldrazi sources that aren't on the battlefield
With any creature removal, Maze of Iths, the fact that Mishras can soak up 3 damage and RRR definitely hurts your mana base, I wouldnt play them if you want to win
