A nice addition would be to add a list of units that benefit (or provide benefits) for the specials. For example: if a card has human champion bonding, then list the human champions.
The
Hero Scape Army Builder has this and I find it really useful. And the old
Hero Scape Manager also had this (unfortunately it hasn't been updated for a long time -- it had a version you could download to your PC and take with you -- i.e., no internet connection required).
Also -- nice work on this.