Im not quite sure, but can you even play Ramos, Dragon Engine in this deck, because red is mentioned in his card text. but thats no cost, so think its fine. Anyways cards like Twitch, Twiddle or Voltaic Key in combination with Strionic Resonator and any effect that puts more than 1 or 2 counters on something (OR RAMOS) just lets things go out of hand.Pretty nice deck you've got there!

Aw shoot, you're right. I can't run Ramos because he's absolutely five color. I got all wrapped up with visions of so much mana, and were Proliferate triggering as frequently as possible not so important to the theme I'd just make him the commander. Alas, I'll have to get more creative.

No problem dude, If you run Ghave, Guru of Spores you might consider Master Biomancer, as they work together really well. Another good thing to include for kill pressure might be Chasm Skulker and Altered Ego for utility, as it can copy basically anything triggering some effects with insane numbers of counters.. you want another doubling season with legs? here i copy the Deepglow Skate i just casted with 6 +1/+1 counters on it... oh wait did i say 6? lemme just double them real quick!

Oh! i forgot! i meant to recommend Chasm Skulker in combination with Prime Speaker Zegana

Added both.