The cost might need to go up seeing as Other creatures are generally from a 1.5x-3x ratio in comparison to normal creatures. With the ability, I'd think the creature is worth at least 7.
In the table, take out
![Rainbow :rainbow](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/rainbow18x18.png)
and replace it with "3" - the
![Rainbow :rainbow](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/rainbow18x18.png)
icon is a forum-only icon and as a result is not used in card formating.
I think it's an interesting other creature - in general the Behemoth Dual Swap/Boost mechanic seems to be something that can be expiremented with very well.
is the ability a one time use?