So I was doing some PvP today, because I was bored. I was fighting a commander will full commander gear, and he had an imp pet. With only a pedigree of 28. (It was an ancient one too) so we started fighting and I used an ice bird to get me an ice blade and to do a little damage. As soon as that spell finished his imp cast a fairy. I was thinking "okay maybe a lucky cast" but then I go and put down a minion and it casts a sprite. I didn't trigger it at all since nothing hit him. Through-out the whole battle this imp was spamming heals of unicorn, fairy, and sprite. The thing is I couldn't kill him because the full commander gear gave him amazing resist so something like a triton or judge wouldn't fully kill. It ended when I ran out of cards.
What level are you? If you are level fifty and in celesftia, you can buy reshuffle tc from the archive. If you aren't aware of what reshuffle is, it is a balance card for four pips that allows you to put all your cards back in your deck when you are running low on cards to use. Also, you should focus on getting more resist as well. If you get more resist you might be able to outlast him, especially if you have reshuffle.
