Question: How do you tank?

[Foxkid]

They don't directly stack effects, they just have complementary effects. You won't see Convalescence increasing the heal you get from ToB since it is not "Healing Magic". Convalescence increases incoming healing while ToB increases HP total, therefore giving you a larger HP pool to take greater advantage of the increased healing and reducing the potential of over-healing. They also have the same duration and recast time so they can fit together quite well.

Ok, I see what you mean.

I tried it out during a particularly unfortunately dangerous pull on Longstop, it certainly helped me not die against 9 enemies at once (and popping a potion when my hp dropped to 20...)