The idea behind this deck is to get creatures evolving quickly and for those evolutions to lead to further evolutions. There's also some card draw (with Prime Speaker Zegana and Divination) for keeping options open, and accelerated mana acqirement through Elvish Mystic and Gyre Sage.
Renegade Krasis is the most pivotal creature in the game, since its passive ability can quicken the pace of the evolutions of all my other creatures. Kalonian Hydra and Master Biomancer will highly contribute to increasing the rate of stacking evolution counters.
Ooze Flux will take counters off of Renegade Krasis (and other creatures, if necessary) to evolve Renegade Krasis, which evolves all other creatures as well due to Renegade Krasis' ability.
Simic Charm is a fantastically versatile card--it can be used for avoiding spells that would send creatures back into my deck (with the hexproof permanents ability), or for combating overly strong enemy creatures (with the +3/+3 ability). Bioshift is similarly versatile: if an opponent uses a kill card on a creature on whom I have placed most of my +1/+1 counters, I can easily move the counters to another creature without many losses. Simic Manipulator will also help me deal with opponent threats.
Cards like Crowned Ceratok, Elusive Krasis and Kalonian Hydra will ensure that the opponent takes damage through doing direct combat damage to the player.
Are there any other cards I could use to help quicken the pace of the evolve mechanic? Is there anything I'm vastly overlooking?
(This is an alteration of my Simic Combine Multi-Evolve Deck that I posted yesterday.)
EDITS MADE:
I removed Fathom Mage because even though it has card draw, it costs a bit too much, and once I get Kalonian Hydra going, I end up not attacking so as to not mill myself to death with all the +1/+1 counters on it. There are now more of Prime Speaker Zegana and Divination each, for less ridiculous card draw.
Deadbridge Goliath was removed because although it's powerful, it doesn't have or grant anything to the evolve mechanic, aside from evolving creatures. I've increased the number of Master Biomancers to help accelerate the evolve mechanic instead.