Bourgeois Man's Control

Possible upgrade choices from poor man's control:
https://eternalwarcry.com/decks/details/m6buRxD8Hko/poor-mans-control-to-masters#comment-xUTaJ9hzwmw

I love Feln, but it's biggest weakness is it's weak big threat mass removal. Putting in some Harsh Rules really made the whole deck more consistent.
It's based on this: https://www.tgpeternal.com/articles/2018/7/19/sweepers-and-sheriffs-a-jps-control-deck-guide
I find Stonepowder Alchemist an absolut power house, it gains you at least 4 life, often more, blocks aggro units and when you dark return it from the graveyard it comes into play instead and you draw a card, making dark return the best cantrip in the game.
Speaking of Dark Return, it also ressurrects your merchant if needed, giving you the chance to draw 2 or 3 cards from your market with just one merchant. In a game where a single unanswered threat can win the game, this is huge, too.

There are some 1-off spells in the sideboard that can be brought back with Kenna, Shaman of the Scale. Quite often if you want to activate tribute you can just attack with your units to sacrifice them to the enemies blockers. Most opponents block to play around Harsh Rule, almost no one lets attacks through to avoid tribute (which happened to me in Kennadins, a lot). Even if you don't get your tribute it's still a solid finisher that removes one of your opponent's pesky Aegis units.

List is still not finished, but the only real changes will be how many Jotun Feast-Callers, Black Sky Harbinger or Svetjas to include.