The death trigger for your insects is odd, but if you run mainly creatures and lands like many green decks, Zask makes mill two look a lot like draw two. #20
If I've got enough devotion to black on my board, that might end up being Gray Merchant of Asphodel, which would also be a great recursion target if it finds its way to the graveyard
The first place to look is, of course, the list of legendary creatures and commanders that have the snow supertype or that mention snow in their rules text , but that can be a little misleading
Auntie Blyte, Bad Influence The +1/+1 counters stack up by the same amount of damage you took, so the ultra-rare flying on a red card with no drawback becomes really important and quickly makes a lethal threat out of Auntie Blyte, Bad Influence
It also combos well with another card on this list, Pyrohemia, turning every one point of damage into a +1/+1 counter
If you already have enough stuff to get you to five mana then Thragtusk is a good final nail in the coffin in the role of life gainer while also rarely being a dead spell in any match up