Puffer fish + Adrenaline. An ideal pairing. Here is a setup that is to push the hope of a quick direct poison KO, leaving it all out on the table:
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You’ll be slower than a normal scorpion + adrenaline deck, but gain the added stability mid game from the permafrost shield, added strength from the beefy fish. You have to worry somewhat about your own shield being stolen, but the fish can take it on. Adrenaline keeps freeze from phasing them too much. The heal + the staff will keep you afloat enough to let the poison do its thing. An adrenaline fish has a great damage curve, one killing an opponent solo in 6 turns. (12, 26, 42, 60, 80, 104). Your weakness with be a super rush deck that can take out your shield (fire rush, darkness rush), your high dependence on quanta (discord, EQ), heavy CC (lightning, rage potion) and draws that are sub-optimal (too many adrenaline, low quanta draws)
You can go a bit more defensive with something like this:
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Lock down creatures easily, build-up damage only stopped from killing your fish or a diamond shield. I chose the jade shield to protect you from direct damage, and packed a purify to resist any poison strategies. That takes care of every form of damage you can take. What deck can boast that!