I play a death cleric with one level in wizard for find familiar.
For my familiar I have a gelatinous ice cube (stats of a oblex spawn)
At lower levels it was super fun but we are now level 5 and with only AC 13 and 18 HP it is dying in literally every single fight. I find myself using 2/3 first level spell slots to summon it each day.
The DM allowed me to buy a helmet for my cube, though it is less wearing it and more in in lol, this gives it AC 14, an improvement but not really helping as it is most often aoe spells that kill it.
I'm looking for ways a cleric 5/wizard 1 can improve there familiar.
I have considered shield of faith but this uses up my concentration and that a big deal to a cleric. Mage armour seems to be the best idea for increasing the AC as it lasts mostly all day, is only a lv1 spell and give my familiar AC 16 making it comparable to an average PC.
Is there anything else to improve either the survivability or damage potential of my familiar ?