Just play another class then. I saw benefits to all the abilities and think that any team should have a variety.

Instacast heal is always useful, as is instacast slow/damage. Came in handy a number of times if you know how to make the most of it.

I used the Rescue multiple times on our best tank and occasionally other teammates. I had one teammate who repeatedly went way too deep and so I just never used it on them, because it was a waste of a spell. Instead I saved it for the best who needed rescuing as we were retreating or if they were getting focused.

It felt perfectly capable in combat and helpful to the team, even with the reduced functionality of the cards.

Can't be OP all the time friend.