The reason that hand couldnt win on turn 1 was because it didnt have Black mana or access to Black mana
However, I decided to take things a step further, and figure out what deck should I have played, hypothetically, if I knew exactly what my opponents would play. The deck I came up with was
Lurking in the darker corners of the White Flare expansion is the Hydreigon ex Special Illustration Rare
In your Jeskai deck, Cliffgate gets red or any other color
During design, I changed the card to this: (which explains the name
Card Name Mana Cost Type Legendary Creature Qu Rarity Uncommon rules Text If one or more tokens would be created under your control, those tokens plus a 1/1 green Frog creature token are created instead., Sacrifice a Frog: Put a +1/+1 counter on Quina