Hmm, I don't get what you mean by the spamming thing, cause once the seals have been placed, you don't have to keep adding them. If it helps, it's the same technique the Sound Four used when trapping Sasuke in that container.
Since it only says the name of the 5 elements in the title, I'd assume that they are the only elements you can seal.
(Kuchiyose: Raikō Kenka) - Summoning: Lightning Blade Creation
Rank: B-Rank
Type: Supplementary
Range: Short
Chakra cost: N/A (-5 per tool/weapon)
Damage points: N/A
Description: This is a special "ninja tool summon" that allows the user to seal basic ninja tools, like shurikens, kunais, swords, etc into sealing marks placed on their clothes or their body. The ninja tools can be summoned in an instant just by touching the sealing "marks". The greatest advantage of this technique is that the time between taking out a ninja tool, taking the right stance and actually throwing it is greatly reduced and one can unleash a barrage of weapons with great speed in a small time window. Also when a weapon such as a Fūma Shuriken is summoned, the time needed to throw it can be further shortened by having prepared the weapon in fully extended form beforehand. Sasuke even shown that you can have the weapons connected to wires and linked to their sealing marks and used the technique in sealing marks he placed in his wrist bracers.
Note: Can summon up to 30 basic tools per sealing mark and can have up to 2 sealing marks.
As you probably saw in the anime with Sasuke, you can seal ninja tools in your body, releasing them in the perfect position when needed. This is great if you're in a pinch and can't reach your ninja pouch for tools, although do not that the seals do have to be touched to activate them.
(Kyōkai Kekkai no Jutsu) - Boundary Barrier Technique
Rank: A-Rank
Type: Supplementary
Range: Short - Long
Chakra cost: 30 (-10 per turn remaining active)
Damage points: N/A
Description: This is a detection type barrier which is simply a more advanced version of the (Kekkai: Tengai Hojin) - Barrier: Dome Method Formation technique and that can be used to surround an area and allows the user to monitor a certain area covering from the sky to underneath the ground creating a sphere. The user will create a tag with the 許可 (Kyoka) Kanji and place it on the ground, doing the confrontation hand seal afterwards to activate it. After the barrier is erected, the user, if inside it, will be able to detect any enemy inside it, even if he hiding his presence. After that, anyone who enters or leaves the barrier is instantly detected as well as anything that moves inside it. Techniques that mask the users presence are ineffective at avoiding detection as the barrier focuses on movement and displacement of matter, not solely on chakra detection. The barrier can also be moved according to the requirements of the user by moving the tag.
Note: Can only be used twice.
A sensing technique which involves you creating a tag with the Kyoka Kanji and placing it on the ground, before performing a hand seal. It allows you to sense up to long range around you.
(Tajū Mugen Hōyō ) - Multiple Infinite Embraces
Rank: A-Rank
Type: Offensive
Range: Short-Mid
Chakra cost: 30 (-100 to the target per turn, +100 to user per turn)
Damage points: N/A
Description: This technique is a stronger version of Infinite Embraces and is used basically in the same manner. The user will do the Tiger → Dog → Horse → Dragon → Boar hand seals and slam his hands on the ground, creating a bigger barrier than the original technique but similar in its essence which drains the target's chakra but also pushes down on them making it much harder to break free. The massive pressure the technique puts on the target prevents the target from moving unless it has some sort of enhanced strength ability, making it very difficult to break free from it. Unable to move, the targets are also unable to mold chakra above A-Rank while having his chakra drained. The barrier can only be broken by A-Rank techniques or above or by attacking the user.
After performing a series of hand seals, slam your hands onto the ground, creating a large barrier which traps the opponent inside. Their chakra gets drained, whilst pushing them to the ground. They can, however, break free with strong enough techniques.