Jutsu Chakra Cost

Every jutsu has a base chakra cost. /jutsu info shows the cost for your learned technique, while /chakra info shows how much chakra you currently have.

In the standalone /jutsu execute practice flow, mastery reduces the technique by 1 chakra for every 10 mastery (maximum 5 at mastery 50), never below 1 when the base cost is above zero.

Battle uses a broader effective-cost calculation: chakra control, mastery, and build cost reduction are combined, with total reduction capped at 20% before other battle-specific multipliers. This is why a combat button can show a different effective cost from another player's version of the same jutsu.

If you cannot pay the effective cost, the technique is blocked and no cast occurs. Spending chakra also restarts your normal passive chakra-regeneration timer, so loadout planning matters across a longer fight.