Yuan-ti ToA Cockroach build Magic item help

I am currently in a ToA campaign and we just lost our only tank making me the defacto tank (I have 20 AC and 42 HP currently which was reduced from its actual max of 68) I don't expect to survive very long. Im building out a second tank when he dies (our original is going to make another). Currently they (my backup) looks like:

Yuanti ancients paladin 7/War wizard 2, rolled stats (after racial bonuses): 13/9/14/13/8/20 with my first (and only ASI for this build until we get out of the tomb) going to increase my intelligence so I can take war wizard in the first place. The level 20 plan is Ancients paladin 7/ War wizard 2/ Shadow sorcerer 6/ Swords bard 5 at swords bard 4 take resilient Con and at shadow sorcerer 4 improve my dex and con by 1

Any ways, as a part of character creation I get an uncommon and rare magic item as well as 1000GP. I plan on at the very least buying splint armor if I don't end up getting magical armor.

The rare items that I have already checked with the GM and he shut down are: Cloak of displacement, Sword of wounding, amulet of health, and robe of eyes. I also know that most uncommon are good to take, but some have an extra gold cost associated with them so Im holding off on making purchases.

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Anyways, My question to you all is what magic items should I be looking at? I know I need a magic weapon. No question. I am also going to let my party know not to touch kubuzans spirit (my current character has him and he is a wizard) because this character needs him (or at the very least a belt of giant strength).

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edit: added a magic item I suggested and he shot down