>Magcargo is 10 TIMES hotter that surface of the sun, it should destroy whole planet!!!1

Using heat capacity formula: C = Q/(m * dT)
we can rearrange formula to get energy: Q = C * m * dT
Assuming Magcargo (55kg) is made out of coal it has C = 507 [J/(kg·K)] and we want to know difference of energy between 10 000 and 20 Celsius degrees we will get:
Q = 507 * 55 * (10000 - 20) = 278 292 300 [J/(kg·C)]

Now to understand this number, let's check how much mass of water it would heat from 20 to 100 degrees of Celsius
C (water) = 4190 [J/(kg·C)]
m = Q/(C * dT)
m = 278 292 300 / (4190 * (100 - 20)) = 830 [kg]

Congratulations, your Magcargo can evaporate half of a small swimming pool.

btw Lockstin's video is also retarded saying energy can be transferred into mass and backwards