I like the idea of being able to swap out weapons. Unfortunately, this card essentially forces a duo which will greatly limit its applicability.
Trios, quartets, and up are usually too unstable / unreliable to be useful.
So basically you can only use this in
![Fire :fire](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/fire18x18.png)
or rainbow decks.
Essentially, you would be relegated to using it to swap out type "Other" weapons plus pulverizer (not too useful without
![Gravity :gravity](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/gravity18x18.png)
) and farenheit.
For this kind of mechanic to be really useful, it generally needs to be flexible enough (cost wise) to be used in any element combo. This is because most of the weapons in the game are element specific and the ones that are not generally do not have an ability that would make them worth swapping in or out.