Well I've been playing Monsters more or less since day 1, so I'm happy to stick with it. Not impressed by Triss Butterfly or Yennefer - when they're played against me I just tend to pass as soon as possible. They can also be managed, and in a long round, Biting Frost does more. Geralt: Igni is a good card, but has also been quite underwhelming when played against me now that I'm not running Ogroids & I see it coming, so I'd rather not craft that either. Succubus is SO GOOD against high-power minions anyway.
Vert about your deck, I take it you're running Eredin? If so then:
1) I'd run 3x Wild Hunt Hound since I really like having access to my weather (I'm even running White Frost!). It also allows you a free 3 power when you play Eredin because of Wild Hunt Navigator.
2) I'd probably cut First Light for Archgriffin. At the moment I'm just running Water Hag as weather clear, your meta might differ, but even then running two full Clear Skies effects seem excessive.
3) Why the Dimeritium Shackles and Mardroeme? Drowner is a solid performer in my deck so you might want to try it, especially since you have Geralt: Igni; I do run a lot more weather than you though.
4) Jotunn is a card I tried and eventually took out. It's not that the card is bad, it's just that for full effect you need your opponent to have 3 minions to move. Now that frost only damages one unit in a row, the effect is also not that strong. I can see Jotunn being an absolute all-star with the old frost effect, but not the new one, given the other competitors for its silver slot (Fiend, Frightener, etc).
Your gold card choices make me somewhat jealous haha, wish I had those cards.
Do you find your relative lack of interaction a problem? Say, opponent plays Arachas Behemoth, or Redanian Knight on a frosted row, etc?
Lack of interaction? I have weather, Hag's Lacerate, Scorch, Igni, Shackles, etc.
I like cards that move for the reasons that Sjok illustrates. All those effects, plus Speartip, really benefit from my ability to move your cards around and to fiddle with their totals.
Mardroeme is the bronze poor man's version of Bekker's Twisted Mirror. It can easily swing 15+ power vs. decks designed to concentrate power (Dwarves, Elf Mulligan, Consume, Skellige Discard, etc.).
I like First Light because it's flexible. Sure, the Archgriffin has 7 power attached, but that's irrelevant if you are facing either multiple weather effects or Rahg Na Roog/Drought. Clear Skies has 6 power stuck onto its butt if it is used to sweep Foglets, even more if those foglets have been pumped.
Also, First Light is my potential extra Hound. Hound/Harpy/Elemental are my only bronze unit, so one of those is what my first light is grabbing in non-weather matchups. It's never a dead card and, in those scenarios, it's also deck thinning. I wouldn't want the third hound over any other bronze card and I'm not going above 25, so it's the cut.
Also, Shackles + Caretaker can steal gold cards, and stealing Triss/Yenn is the most fun a girl can have without taking her clothes off.
My deck is reactive. I don't try to play super aggro. I try to generate card advantage, usually losing round 1, try to maintain card advantage through round 2 thanks to my carryover creatures, and then punish them with card advantage round 3.