I've found 3 techniques at once become too tiring on me, and result in lazy responses from students, so no.
(Doton: Ganchūsō) - Earth Release: Stone Spikes
Rank: C
Type: Attack
Range: Short-Mid
Chakra Cost: 15
Damage Points: 30
Description: This technique lets the user create a few rock pillars that will protrude from the ground to skew the target. The rock pillars will even pass through obstacles to reach their target.
This jutsu uses your earth chakra to manipulate existing earth. The user will send their earth energy into the ground and move it beneath their opponent. The user will then merge his own energy with the energy in the existing earth beneath the opponent. The user will then call their energy to rise from the ground while sharpening it. Since the energy has now become one with the earth, this will cause the earth to rise up with the user's energy. The earth is sharp enough to pierced flesh. This technique is used mostly as a pure distraction technique. It has not other true offensive uses. A fighter would use this to create spikes under his opponent to make him cheaply respond to give time for the fighter to follow up with another attack. I personally find it somewhat cheap to just start out with this technique first turn, but in certain situations, if can give you the upper hand. To guard, either use a lightning techniques to make the pillars crumble, or if your bio has the speed and reflexes for it, use a technique that strengthens your feet and smash the pillars with kicks as they rise. The latter is mostly for finesse points.
(Doton: Yochi no Douyou) - Earth Release: World Shaking
Rank: C
Type: Offensive
Range: Short - Mid
Chakra cost: 15
Damage points: 30
Description: The user will concentrate and release their chakra into the ground to create a small tremer that can result in harming the enemy target.
The user sends their chakra into the ground and then wildly manipulates it underground. This will be enough to cause a small tremor in the earth enough, not strong enough to make your fall, but strong enough to make your lose your balance. Though it reads offensive this is more of a supplementary technique. Mostly it is used to occupy the opponent to give time for the user to use another technique. By itself, it is not very strong. To defend against it, I would first channel chakra to my feet to stick to the ground as it shakes. This will prevent me from losing balance. Then I would take to the air to perform an aerial attack rendering the tremors useless. Or use a lightning jutsu that travels through the earth to cancel out the earth chakra while also attacking your opponent.