Eh. Mono- is not bad. Of course, against mono giants like , it pales in comparison, but it is not too bad. Better than mono at least.
looks pale against every element.
Before the last few patches, the answer would clearly be
, but after hope and bioluminescence I'm not sure.
does have flying weapons, which I love so I can't vote against it.
I think i'm going to go with
. Its mono is getting weaker duo to more quintessenced creatures, and less emphasis on creature control with the last patches. Afltatoxin only shines in a duo, Death Nymph is not much better than an aflatoxin, and Mummy is only useful in a duo/tri deck, where death is the least used element. (And I know poison decks are awesome, but IMO the best poison decks are water/death)
Air and Death are the elements that need a new mono boosting card, like Hope.