Birdbrain vs boysrobert?

[Birdbrain]

Ill roll...it's a 12

[Boyesrobert]

Okay I roll 3

[Birdbrain]

Forest
{commune with nature}

Picked {grave bramble}

Pass

20/6

[Boyesrobert]

Draw, play mountain
Play {stromkirk noble}
Pass
20/6

[Birdbrain]

Draw

Play a mountain

{gate creeper vine}

Picked mountain

Pass

20/6

[Boyesrobert]

Draw, play mountain
Play {madcap skills} on the noble
Swing 4
If taken your turn
20/5

[Birdbrain]

Draw

Play forest

{grave bramble}

Pass

16/5

[Boyesrobert]

Draw, play mountain
Play {mizzium mortars} at the 3/4 wall
Play {foundry street denizen}
Swing 5 with the noble
If all resolves pass turn
20/3

[Birdbrain]

Draw

Mountain

{rampant growth}--->forest

{rampant growth}--->forest

Pass

11/3

[Boyesrobert]

Draw
Play {rakdos cackler} unleashed
Play {ash zealot}
Swing 6 with the noble, 3 with the denizen, and 2 with the zealot
Response?

[Birdbrain]

Block the nobel

[Boyesrobert]

You can't because of {madcap skills}

[Birdbrain]

Oh sorry. Block the denizen than

[Boyesrobert]

Okay you take 8 then, your turn
20/2

[Birdbrain]

Draw

Mountain

Tap 6

{fireball}.....

1 damage to each of your creatures. Response?