How do attack effects and item abilities resolve?

I’ve been pretty casual with the game so far but now that I’m past floor 1000 (currently just shy of 1500) I’ve noticed the need to take control and strategize has become much more relevant. This has made me curious how the relationship between things resolve.

For example if I have Glee and use earth ward with cake scarf and construction hat, in what order does that trigger and resolve? In my mind (magic the gathering brain) this would create a loop until the targeted ally is healed to max health with a 25% shield.

Do effects resolve simultaneously or is it attack ability, then head ability and then neck? Is there anyway to have abilities trigger multiple times in a turn without an extra action?