summons are best for start
so:
(Kuchyose: tei taishou) Summoning: boss rat
Type: Supplementary
Rank: A
Chakra: 40
Damage: 10 per turn
Descritiption: The user summons a biggest rat of all there is and it appears near the user. This rat would be the most elite weapon of all there is, but because of it's weight it can't move, because of it the only two things the creature can do is eat and spit. So it spits on the opponent on each turn till it gets a sensible pain, then it disapear. For that the opponent has to cause it at least 70 damage
Note: I have wrriten a pack with the rats by signing a pact with my blood and giving them a big amount of cheese
and I summon it next to me and then I summon:
(Kuchyose: tei nezumi) Summoning: spy rat
Type: Supplementary
Rank: C
Chakra: 20
Damage: 0
Description: The user summons a little rat which spies the field for the user. It his only 10
lifepoints, but it can only be hit by mass jutsus which covers big area.
Note: I have wrriten a pack with the rats by signing a pact with my blood and giving them a big amount of cheese
and it disappears in grass and starts spying for me, then I use:
(Doton : chika hebi no jutsu) Earth style: underground serpent jutsu
Type: Attack
Rank: A
Range: can't move out of the ground and to water
Chakra Cost: 30
Damage Points: 15 per turn
Description: User first forms and egg in the underground, after two turns it hatches and moves through earth attacking everything he meets in his way except the user of the jutsu. It last 4 turns till it dyes from oldness.
and egg forms. XD