you would find a monster battle arena at calm lands.
the owner of the arena would ask you to capture monsters for him,and he would give you
rewards if you cuold catch what he wants
accept by saying yes, he would sell a specially customized weapons for capturing
monsters.i suggest you to buy this from the owner:-
*Taming Sword - Tidus
*Beastmaster - Auron
*Catch ball - Wakka
equip the weapons and you automatically catch monsters when u defeat them.if you
satisfy the owner he would give you the key for the locked chest nearby,which contains
Yuna Celestial Weapon,Nirvana.

what but i already p***ed the calm lands does that mean i have to go all the way back to
the calm lands!?