I'm just trying to make your deck as it is one of few that doesn't need upgrades. I would just like to ask wether I could put in Owl's Eye AND Eternity.
I think you COULD, but it would be a little redundant. You'll have a better chance of drawing your weapon with fewer cards in your deck, and if you're using Owl's Eye to speed up the battle you don't really need Eternity to drag it out, or vice versa. I would personally pick Eye even if I had both weapons, I think, since it plays so well with the need for picking off enemy creatures (or your own cells) to power your Bone Wall, or lowering the HP of a strong creature so your otyugh can eat it. The Eye version of this deck does benefit from six novas/supernovas (or extra pillars, I guess) though, so it can last a bit longer if necessary. Those weapon special abilities are expensive anyway - as are the cards vital to your strategy, especially if not upgraded - so more quantum cards are great.
If you REALLY feel the need to use both weapons, throw an animate/flying weapon card in there somewhere, it's worth a shot.
...you know, it occurs to me that I have two Eagle Eyes. Maybe I should try the animate weapon trick myself.
Although maybe not with Eagle Eye since there won't be that many quantum to begin with, but I'm sure there could be some synergy in there...I'm told the life weapon heals multiple times if animated + adrenaline. I'll mess around some.
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Another fun variant trick to this deck is to swap out one Bone Wall from bsurma's version and replace it with a Skull Shield. That gives you some flexibility - while I don't think Eagle Eye vs. Eternity would make much difference, sometimes those AI5 opponents are unpredictable (since there are so many) and being able to switch to Aflatoxin'ing the enemy field on the fly has saved my behind a few times. If you have Skull Shield (or a stolen ice shield or similar) up and the enemy field is full of cells, at best they can only play ONE creature that can actually damage you, and then only if you've eaten a cell to have your otyugh do more damage. I was up against a deck that loved its dragons, and doing this it was only able to play one dragon at a time.
With multiple Aflatoxin in your deck you can still flood your own field afterward for Empathic Bond bonuses and the like, too.