In the word search, we can find 16 instances of Super Smash Bros. Ultimate fighters. (Ultimate specifically because of the flavor text)


This is two instances each of 8 different fighters. There are also 8 rows in the fire table, so we should match different fighters to rows. The flavor text says something about special moves, and parrying regular moves with fiery ones. Each of these 8 fighters has at least one non-fiery special move and at least one fiery special move. Now we notice that the word search looks like a D-pad. Each fighter is found in two different regions of the D-pad, and regions of the D-pad correspond to directions of special moves (center is neutral special, left/right is side special, and up and down are up and down special, respectively). So we take the corresponding special moves for each fighter and figure out which one is fiery and which one is not.

Fighter Not fiery Fiery Notes
Duck Hunt Clay Shooting (Side) Trick Shot (Neutral)  
Falco Reflector (Down) Fire Bird (Up)  
Luigi Luigi Cyclone (Down) Super Jump Punch Super Jump Punch has a fiery sweetspot.
Mr. Game & Watch Fire (Up) Judge (Side) “Fire” is not fiery. It’s just a parachute launch. Judge is fiery when it’s a 6.
R.O.B. Gyro (Down) Robobeam (Neutral)  
Samus Charge Shot (Neutral) Missile (Side)  
Steve Minecart (Side) TNT (Down)  
Villager Pocket (Neutral) Lloid Rocket (Side) Pocket can deal fire damage, but that would require help, contradicting flavor text.

Now we put them into the fire table. We take the name of the non-fiery move and parry it with the fiery move by removing all letters that appear in the fiery move’s name.

POCKET
LLOIDROCKET
P
GYRO
ROBOBEAM
G
Y
FIRE
JUDGE
F
I
R
REFLECTOR
FIREBIRD
L
C
T
O
MINECART
TNT
M
I
E
C
A
R
CHARGESHOT
MISSILE
C
H
A
R
G
H
O
T
LUIGICYCLONE
SUPERJUMPPUNCH
L
I
G
I
Y
L
O
CLAYSHOOTING
TRICKSHOT
L
A
Y
N
G


Extracting from the white squares gives PYRORAIN.