i don't know about using shards (because i don't own any), but it seems to me to be too
small draw-chance reduced for a muta-rush, even taking into account the increased drawpower. i could be wrong, but just to be on the safe side, i'd say maybe trade one more mitosis for an improved mutation to help improve the starting hand. the draw seems crucial, and you've only got 5 critters before mitosis, that's not a lot, even for a 30 card. i guess the card balance isn't right, but i could be wrong, i'm still a newbie and more used to working with 35+ cards
i'm currently using a muta deck, although it is stall based, and concerning the need to safeguard my critters, quint can be the answer, but why immortalize your creature when you can just spawn more? maybe look into that as well, heck if you've got it, replace one quint for a shard of readiness on your micro-abomination (just throwing wild ideas, here, no testing done)
http://elementscommunity.org/forum/index.php/topic,37019.0.html the link to zhangvict's deck idea, and my deck post.
by the way, what is your aim with this deck? AI grinding? pvp? arena?
and is it just me or are people desperately trying to find a use for the singularity generated by multiple supernovas?
i've gotta go, but i'll look into this deck, it'll change from my muta-stalls