I have 5 creatures with Greater Emergency Heal and those plus the rest with a lesser heal and thought it would be interesting to see what I can do. I tried out Tuoramoloch yesterday alone and it did well so I put together an annoying whole heal team.
I got all 4 creatures picked with both heals (Baja, Edmonto, Dilo and Tuora) and used them all. It was a painfully long battle losing at the very end although taking down a boosted 22 Ardentismaxima. So I would say these creatures are averagely balanced and useful.
I’ll continue my playing around with different teams.