If “Affinity” exists as a rule, add to it the following:

Each Tesser has an amount of Shards, which are a magically created resource. Shards have an element, which is a Tesser Affinity. Each Tesser’s Shards are tracked in the GNDT by a capital letter of their element (FFWN for 2 Fire shards, 1 Water shards and 1 Nature Shard, for example). A Tesser can hold as many shards as they have Power. A Tesser can pay 3 Power to make a Shard of their Affinity. Tessers can freely give their Shards to other Tessers if that Tesser would be able to hold them. Tessers can freely discard their own Shards.