During missions and other events, you are granted the right to capture creatures. When it comes to capturing creatures, there are rules that must be followed and tools that must be used. First of all, you need to have at least one capsule ready for use unless the creature you are trying to capture is a Class 5 creature.

Creatures have their own HP, and they must be weakened enough before they are captured. The first two digits that a creature has are all that matters. A creature can be captured by rolling an Item Dice and using a capsule as the item. Once performed, the Item Dice amount must be equal to or higher than the first two digits of the opposing creature's HP. Generally, information regarding the creature will be provided. Also, you cannot capture another person's creature unless you have an item that permits it.

Finally, if you are attempting to capture a Class 5 creature, a capsule will not be needed for the capture itself, but you will need some type of Sealing technique as well as a Summoning technique. The capsules aren't used, but still determine the slots in this case.