ok once you master the basics now it's time for the next level which is how to summon:
Before a summon can be performed, a prospective summoner must first sign a contract with a given species. The contract can come in the form of a scroll or a tattoo. The summoner then signs the contract in their own blood. After this, they need only perform the hand seals, offer an additional donation of blood, and use the same hand they signed the contract with to summon the creature. The amount of chakra used during the summoning determines how big the summoned creature can be. It should be noted that anyone can summon the animal as long as they have the blood from someone who has made a contract, along with sufficient chakra of their own.
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