Equipment

Each Monster has 4 equipment slots which are filled in order. 3 slots can be filled with general/combined items while 1 slot can only be filled with legendary items. Once a slot contains either a legendary item or a combined item the next item will be equipped in the next empty slot. If a slot contains a basic item, then another basic item may be combined with that item according to the chart below.

TODO:
 * Basic item combination chart