Now I'm going to throw two techniques at you.
(Doton: Kajūgan no Jutsu): Earth Style: Added Weight Rock Technique
Rank: A
Type: Offensive/Defensive
Range: short
Chakra cost: 30
Damage points: N/A (up to +20 if used to add damage)
Description: The user will perform the Snake handseal and touch a given target (he needs to use his hands in most cases but can release the technique through his whole body if needed) for a small time frame. Upon doing so, he'll use the earth chakra to increase the weight of the target drastically. The technique can increase the targets weight up to 10 times. One interesting side effect of the technique is that when its used on wood based techniques (such as Zetsu's spore clones or normal wood), the infusion of large amounts of earth chakra into it will actually petrify the target in addition to increasing its weight. A similar effect can be achieved in other earthen materials such as mud. The user can also add weight to a given attack (if feasible) to increase both momentum and impact force, effectively adding damage to it.
Note: The weight change lasts 2 turns or until countered.
(Doton: Keijūgan no Jutsu) - Earth Release: Light Weight Rock Technique
Rank: A
Type: Supplementary
Range: Short
Chakra cost: 30
Damage points: N/A (up to -20 if used to boost speed of a physical attack)
Description: Contrary to its counterpart (the Earth Release: Added-Weight Rock Technique), instead of making the target heavier, this technique makes it much lighter, though still using the same principle and mechanics. The user will make direct contact with the given target (through his hands), infusing them with earth chakra and lowering their weight drastically. The technique can lower a targets weight up to 10 times less than it originally had. This allows freer manipulation of the affected objects, which would normally carry considerably more weight and as such, require a greater amount of exertion to move. The technique can be used on the user or other shinobi to increase their speed, but as a consequence of using it this way, it results in the decrease of the physical force of their blows. The same principle applies if used on a physical attack wich will be faster but will carry less momentum and as such, less physical damage. It doesn't change the "strength" of binding techniques (like Sand Release), where the user is manipulating a dynamic element but will decrease the impact damage of techniques that rely on it.
Note: The initial effects last for 2 turns or until countered.
Analyze them with pros and cons.