Rewards:
  1:
    - command;/tellraw %killer.name% ["",{"text":"+1 kill!","color":"red"},{"text":"\n"},{"text":"+2 FFA Coins!","color":"green"}]
    - command;/playsound entity.experience_orb.pickup master %killer.name% -848 78 -1171 5.0 1.0 1.0
    - command;/give %killer.name% minecraft:emerald 2 0 {HideFlags:1,display:{Name:"FFA コイン",Lore:["ShopFFAで武器、防具、食料、ポーションなどが買える"]}}