Introduction[]
Here I will be calculating the feats in the games by Magic the Noah and his friends.
This is originally from the FC/OC Wiki, but has been moved here due to the new Site Rules (which is understandable I think).
Cool Ice Spell[]
First let's figure out the size of the player... character... things, avatars i guess? To do that, we can use this moment where they discussed whether they could teleport their tank on top the wall which Magic the Noah, without anyone else acknowledging it or asking for it, confirms the wall's height to be 30ft (9.144m). Yes this is about the wall and not the teleportation range, that was discussed earlier to be around 50ft (15.24m). So let's figure out the characters (and the range for most of their other ranged abilities)

Wall: 575px = 9.144m
The Players: 136px = 2.163m or 216.3cm (Extended Melee Range)
General Range: 1763px = 28m (Tens of Meters)
Wow they are... two meter tall orbs of flesh, presumably. If they are, then they should have a volume/mass of 5298686 cubic centimeters or 5299 kilograms, yep they weigh 5.3 Metric Tons (Class 10)! Anyways, cool Ice Spell.

Player: 127px = 2.163m
Ice Block Height/Width: 48px = 0.8175m
Ice Block Length: 112px = 1.9m
Well the volume of a block like this is just a * b * c so we get a simple 1.2698 cubic meters from it. Accounting for the two other blocks, we get a total volume of 3.8094 m^3 or 3809400cc.
Given the feat takes place in water, it's probably simple to assume that he literally freezes the water in that instance than creating it from air. The Energy for freezing water has already been calculated to be 418 J/cc
Ice Spell Potency: 3809400cc * 418 J = 1592329200 Joules or 0.38 Tons of TNT (8-C)
Doesn't seem to be an offensive spell, even if it was I heard that surviving Ice is just resistance not potency so...
I CAST THUNDER SPELL[]
Actually nah, the lightning doesn't really do anything besides being funny here. It probably would scale to actual lightning if I had to guess.
Dark Wizard will never be fireballin[]
Feat here. Because Sophist didn't have the Dark Blast to impress the Dark Wizard due to using it to nearly kill a dragon, he instead combines every Fireball spell he has to annihilate the Dark Wizard and the stone pillar blocking the path.

Player: 137px = 2.163m or 216.3cm
Pillar Width(?): 303px = 4.784m or 478.38cm
Pillar Height: 487px = 7.689m or 768.89cm
Now we can use this cylinder calculator to estimate the volume by assuming the width(?) is either the radius or the diameter. I think the radius is more likely given how this is supposed to feel like the wizard is standing on top of a cliff like the Players did before, but I'm willing to accept the diameter as the low end.
Pillar Radius (Low End): 4.784m / 2 = 2.392m or 239.19cm
Low Volume: 768.89cm * pi * (239.19cm)^2 = 138197479.71 cm^3
High Volume: 768.89cm * pi * (478.38cm)^2 = 552789918.83 cm^3
It's probably reasonable to assume the pillar is made of rock, given the D&D setting, and given that it's destroyed pretty casually given the tone I'm gonna assume it's pulverization. The energy to pulverize rock is 214 J/cm^3
Low End: 138197479.71 cm^3 * 214 J = 2.957e+10 Joules or 7.068 Tons of TNT (High 8-C+)
High End: 552789918.83 cm^3 * 214 J = 1.183e+11 Joules or 28.27 Tons of TNT (8-B)
Given 3 fireball spells were required to achieve this, assuming all his spells are equal to one another in power (though there's definitely gonna be some favoritism towards one spell in the future) we can get the average power of his spells in normal use.
Low Power: 2.957e+10 J / 3x = 9.857e+9 Joules or 2.355 Tons of TNT (High 8-C)
High Power: 1.183e+11 J / 3x = 3.943e+10 Joules or 9.42 Tons of TNT (High 8-C+)
dang, Large Building level seems pretty consistent for Mid-Tier Monsters and Players.
Deforestation of the Mystic Forest[]
Feat here. A Hydra moving onto a space of another Hydra causes the land to "increase", it was later commented that the forest was being rearranged due to the amounts of Hydra's in that area. I will also calculate the speed of the Hydra travelling spaces in a single "turn"
First let's figure out the size of the "Kingdom's Edge". For that I'll assume it to be comparable in size to Vatican City, which was from at least 754 AD and is the smallest state so it works as a minimum. I'll get the square root and then divide it in half, as we clearly don't see the entirety of the kingdom.
Kingdom's Edge size: sqrt(490000 m^2) / 2 = 700m / 2 = 350m
And with that, let's get to the pixel scaling!

Kingdom: 396px = 350m
Space Height: 108px = 95.45m
Space Width: 167px = 147.6m

Distance Traveled (by Hydra): 364+96+114 = 574px = 507.32m
Giant Space Height: 258px = 228.03m
Giant Space Width: 324px = 286.36m
First let's speed outta the way. I believe these movements are quick enough to be usable because of Twobolds ability "Thunder", which launches him 4 spaces back when used, and the dice used to decide how far the players can move (in this game specifically) can reach 6. This basically means the players can return back into the fight even when hit by projectiles that throw them out of it (or launching themselves unintentionally).
As for the timeframe, given that the only things that launch players out of fights are cannonballs and lethal electricity, I'm going to assume the timeframe is the time needed for a cannon projectile to travel 1/3rd of the Hydra distance (because the creature moves 3 spaces while the cannon only moves Lewie 1 space).
Movement Timeframe: (507.32m / 3) / 518 m/s = 169.1m / 518 m/s = 0.32646 seconds
Hydra Movement: 507.32m / 0.32646s = 1554 m/s or Mach 4.56 (Supersonic+)
Now for the Attack Potency of the Hydra moving and destroying a forest. I'm going to base it off this calc and thus, calculate the area of the spaces and see how many trees are in that location.
Normal Space Area: 95.45m * 147.6m = 14088.42m^2
Giant Space Area: 228.03m * 286.36m = 65298.67m^2
Trees in Area: (65298.67m^2 - 14088.42m^2) * (435 trees/acre / 4046.856m^2) = 51210.25m^2 * 0.10749 trees = 5504.63 trees
Now that we have the number of trees, let's multiply that with the energy to destroy trees!
Low End: 5504.63 trees * 9.1700460e+7 J = 504777103129.8 Joules or 120.64 Tons of TNT (8-A)
High End: 5504.63 trees * 6.1832194e+8 J = 3403633500582.2 Joules or 813.48 Tons of TNT (8-A+)
Man these Hydra's are strong, but their ability to spawn a Hydra has only 9 power in this game, meaning any attack stronger than that would scale.
Rearranging Giant Trees[]
When moving to attack Twobold, the Hydra also moved a tree away from the giant space. Given you can't really call a place with like 6 trees a "forest", I'm going to assume these are some special super massive trees given the area is quite... mystic...
I'm going to use values from here again.

Kingdom (Ruler): 396px = 350m
Distance Moved: 257px = 227.146m
Tree Diameter: 73px = 64.52m
Tree Height: 190px = 167.92m
First let's get the mass of the tree, using the volume of the big tree being 549010.97m^3 (167.92m * pi * 32.26^2m) and the density being 704 kg/m^3 we can get...
Tree Mass: 549010.97m^3 * 704kg = 386503722.88kg or 386503.723 Metric Tons (Class M)
Now let's get the KE and Force needed to move the tree, assuming it wasn't uprooted. First let's get the speed and acceleration.
Tree Speed: 227.146m / 0.32646s = 695.785 m/s (Supersonic)
Tree Acceleration (Distance Traveled): 2 * (227.146 - 0 * 0.32646s) / 0.32646s^2 = 4262.6 m/s^2
And now we can get the results of...!
Tree Energy: 0.5 * 386503722.88kg * 695.785^2 m/s = 9.356e+13 Joules or 22.36 Kilotons of TNT (7-C)
Tree Force: 386503722.88kg * 4262.6 m/s^2 = 1647510769148.3 Newtons, 167999344235.6kgf or 1.68e+8 Metric Tons (Class G)
...Welp that was more impressive than I thought.
Massive Hydra[]
Given what the Hydra's do to the environment, it seems fine to assume them "being visible on the map" is them actually being that big in reality.

Kingdom (Ruler): 396px = 350m
Hydra Head & Neck: 25.9+19.3+22.2+30.1+18.2+31.2+27.5 = 174.4px = 154.14m
Hydra Width/Length: 88.6px = 78.3m
Hydra Height: 60px = 53.03m
So they are quite large, twice the height of an average skyscraper large in-fact, but let's compare them to a lizard like a Komodo Dragon and see how much they would weigh. normally they are up to 3 meters in length and weigh 70kg
Hydra's Total Length: 78.3m + 154.14m = 232.44m
Hydra's Weight: 70kg * (232.44m / 3m)^3 = 70kg * 77.48^3 = 32558686.5kg or 32558.7 Metric Tons (32.56 Kilotons, Class M)
That doesn't take into account the additional heads the hydra has, but let's see what kinda KE it has with it's previously calculated speed?
Kinetic Energy: 0.5 * 32558686.5kg * 1554^2 m/s = 3.931e+13 Joules or 9.39 Kilotons of TNT (7-C)
Again Town level... everything seems stronger than the entire reason this calc started...
Thunder Blasting Off Again[]
Pokemon is pretty cool. Anyways Twobold has Thunder which sends him 4 spaces back and causes him no harm. The best demonstration of the move is here.

Kingdom (Ruler): 396px = 350m
Distance Moved (Red): 171.4+515+97.1+210+58.7 = 1052.2px = 929.97m
Distance Moved (Blue): 780.8px = 690.1m
And now, assuming the same timeframe as before of 0.32646 seconds
Low Speed: (Blue): 690.1m / 0.32646s = 2113.88 m/s or Mach 6.21 (Hypersonic)
High Speed (Red): 929.97m / 0.32646s = 2848.65 m/s or Mach 8.37 (Hypersonic)
So you know how every force has an another force going in the other direction? Yeah, so let's calculate the kinetic energy imparted on Twobold and say that's how much energy the thunder... thing has.
Low Energy: 0.5 * 5299kg * (2113.88 m/s)^2 = 1.184e+10 Joules or 2.83 Tons of TNT (High 8-C)
High Energy: 0.5 * 5299kg * (2848.65 m/s)^2 = 2.150e+10 Joules or 5.14 Tons of TNT (High 8-C)
Yeah that's pretty decent.