Open Simulator Challenge: Jesse vs. Anyone

[Travis]

I'm Bored
So I got back from camping, and I wanna start to duel once again. So I'll practice my Crystal Beasts, because I've never got actual practice with them.
So I draw!
I'll summon to the field my Crystal Beast Amber Mammoth in Attack Mode(1700/1600).
I end my turn with a face - down.
H: 4
M: Crystal Beast Amber Mammoth(1700/1600) - ATK
FD: 1 Face - Down
LP: 4000

[Admin]

I draw.
H: 6
Since this is a simulation, I will use a simulated deck.
Come out Flamvell Firedog in Attack mode! (1900/200)
Now, he'll be attacking your Mammoth.
Any counters?

[Travis]

I play my face - down Quick Play, M - Force. My Mammoth gains 500 ATK, making him at 2200 ATK, against a 1700 ATK attacking monster. If you don't have a counter, your monster is destroyed.

[Admin]

I have no counters.
LP: 3700
I end with two facedowns.
H: 3
M: 0
FD: 2

[Travis]

My turn!
I draw!
I summon, my Crystal Warrior in Attack Mode(1000/1000). Now, I'll have my Mammoth attack directly.

[Admin]

I activate the card Negate Attack.
Your attack is negated and the battle phase would end. Have any counters?

[Travis]

No. So I end.
Your turn