Data type: card pack item

DOC_MSE_VERSION: since 0.3.7

--Overview--

A type of card that can be included in [[type:pack type|card pack types]].

The pack item describes how this type of card is selected from the set.

--Properties--
! Property	Type			Description
| @name@	[[type:string]]		Name of this type of item.
| @filter@	[[type:script]]		Condition that a card must satisfy to be selected.

--Example--
>pack item:
>	name: rare
>	filter: card.rarity == "rare"

Rare cards are those with the rarity value of @"rare"@.
