This may get updated at a somewhat frequent rate. Who knows! Many of these cards are potentially in a custom set, so they are meant to be somewhat balanced.
Modal card idea = A card that has more than one possible effect (ex Minion, Pawn, Menagerie)
Commoner's Pride
Cost: 4
Action
Reveal your hand. If there are no cards costing $5 or more, +3 cards. Otherwise, +2 cards, +$1
It was originally 2 cards and +$2 if you had card costing $5 or more, but then I'm pretty sure it would be way too good. However, the value does drop off in the late game quite drastically, so it might need it.
War
Cost: 4
Action
+1 Card
+2 Actions
Each player simultaneously reveals the top card of their draw pile. If the card you revealed has the highest cost, +$1 (Ties count as wins)
In it's current state, absolutely no cost balancing can happen because of Village and Bazaar. I vaguely remember seeing a card similar to this in really bad card ideas. Hopefully I didn't accidentally rip someone off...
Satchel
Cost: 4
Action
Reveal the top card of your draw pile
If it is a treasure card, +$1 and play that treasure.
If it is a victory card, +4 cards.
If it is an action card, +1 card, +2 actions.
If it is a Curse, you may trash it.
Ohhhhhh boy. Based off an MtG card of a similar name. Originally, the card was +$2 if treasure, +3 cards if victory, with the rest the same as the current version. However, after I tried testing it a bit, it felt weak. It was still runnable, but the problem was that whatever effect you got was an effect you could have gotten from a card that costed less than $4. Additionally, you had little control over the effect, so you couldn't try to build an engine around it.
To make the randomness worth it, you have to make at least some parts better than $4. So, it's either a Venture, a draw 4 which guarantees drawing at least one victory card, a village that guarantees you have an action to use the added actions, or a mini-trasher. It looks dangerous, and I'm still a bit scared about the power level, but I think the lack of control makes it safe.