Mountain Smash
I perform the required seals, Tiger → Ram → Rat, and knead Chakra in my hands, before slamming them into the ground. Using the Chakra I sent throughout the ground, I force two massive sections of earth to rise from the ground, and move towards each other with a tremendous amount of
force, so much so, that when they
innevitably collide, they destroy each
other from the sheer force and weight
behind each of them.
Advantages
Major OP technique on the base, few people on the base can actually properly defend from this technique because of its sheer size, rank and power. It's the king of cannon techniques as you've said.
Disadvantages
Massive Chakra consumption, paired with the fact it's one of the few Jutsu in the canon list that actually have a usage restriction,and you have one severely restrictive technique, both in terms of usage, and overall usability. You can't spam this technique and assume victory, as it'll surely mean your inevitable death.
Earth Armour
Perform the technique: I start by
gathering Chakra throughout my entire
body, ensuring that this indeed
constitutes a full-body surge. Then I use nature Manipulation to change the nature of this Chakra to Earth. Next I use Shape Manipulation to give the Chakra form, creating rocks that form from the Chakra leaving my body. This soon forms into a large, rather encumbering armour. Next,
I use my Chakra to constantly change
the shape of the rocks surrounding
both of my arms, forming spikes, blades, blunt edges etc, showing my control over the Jutsu's more creative usage. I finish up by halting my Chakra flow and watching as the armour falls from my
body.
Advantages
Powerful defence with full body coverage and the ability to release the user from high ranking Genjutsu, this is probably the best example of Earth Release's raw utility. In addition to that, the ability to reform the armour for offensive purposes makes for a nice combination, making this one of the best Earth Release Jutsu I've seen.
Disadvantages
That Chakra consumption per turn, and the heavy nature of the full body armour could be very cumbersome especially when you consider the fast nature of Lighting, and its ability to easily penetrate even the hardest rock. That makes this Jutsu tough, but fair.
Earth Golem
I gather Chakra in my hands and change the nature of this Chakra to Earth, before slamming my hands into the ground. I then channel this Chakra into the ground, whereby through Shape Manipulation, I control the
existing earthen elements found in the
ground, creating a much larger variant of the Earth Golem from before. Once the golem forms, I have it perform basic motor functions, such as leg and arm movements, before I have it perform more complex actions, such as running. Then, to display it's power, I have it pick a tree up by the trunk, and pull it out of the ground, roots and all. Once this is done, I stop channeling the Chakra, remove my hands from the ground, and
watch as the golem falls to the pile of
rubble it once was.
Advantages
Versatile, controllable giant slab of rock. That's what this thing is in a nutshell. It maybe weak to Lightning, but does this thing look like it packs a punch. You remove yourself from play to play as a titan, more or less,
probably best to be used by a Shadow
Clone.
Disadvantages
You are left vulnerable while the golem is in play. Though it could be used as a quick makeshift defence, then you continue on as normal.the Other than leaving you open while you focus on it, I don't really see a
problem with this technique, especially because it's like the previous technique, only you aren't inside the rock, meaning you don;t have to worry if the opponent
launches a Lightning Jutsu at it.