I don't want to seem harsh, but this deck doesn't work well in platinum. It's basically a rush, and outrushing plat decks isn't a good idea, since they are usually faster than you and they have much more HPs than you.
About counters, I'd add some more, for example:
- Platinum fast rush (Sofree Monoair, Monolife, Monodeath, Monoaether, etc...)
- Quanta denial decks (Discord decks, Monogravity, Disholes, Monodarkness, EQ decks, etc...)
- Massive CC decks (Pande, Rof, etc...)
I tried this deck in plat, 10 games, just to have an idea of how it works and how high is its win rate:
(Deck type, max HPs of opponent decks, ttw/ttl)
1) vs a rainbow 149 HPs - won in 6 turns
2) vs a monoair + sofr 103 HPS - lost in 4 turns
3) vs a flying discord-stiletto + pande 72 HPs - lost in 7 turns
4) vs a monofire (flying faren + Rof 128 Hps - lost in 6 turns
5) vs a monodarkness (steals, dev, stiletto) - 196 Hps - lost in 13 turns
6) vs ghostmare 191 Hps - lost in 7 turns
7) vs a rainbow 198 HPs - won in 11 turns
8 ) vs a monoaether - 184 HPs - lost in 5 turns
9) vs a life/earth duo (SoG + shrieker mito + EQs) 171 HPS - lost in 11 turns
10) vs a death/darkness duo (deathstalkers, mummies and pests) 101 HPs - lost in 6 turns
So far, 20% win rate (but imho it's lower, i'd say against 15-18% playing a larger amount of games), 0 EMs, average ttw: 8,5
It could be a nice pvp deck btw, not a plat grinder imho. For gold stats, let's wait some gold grinder...