Version 4:
$1
+1 Buy
At the start of your next turn, +1 Card then discard two cards.
Cost: $2
Treasure - Duration
Notes: Version 3 was changed to version 4 due to being way too strong for just $2.
(2nd Overhaul) Version 3:
$1
+1 Buy
Put this on your Tavern mat.
At the start of your turn, you may call this to draw a card then discard two cards.
Cost: $2
Treasure - Reserve
Note: Drawing a card is usually significantly more powerful than +$, especially since this doesn't take an Action to do so. That's why it makes you discard two cards.
(Post-Overhaul) Version 2:
$1
Put this on your Tavern mat.
At the start of your buy phase, you may call this. If you do, +$1.
Cost: $2
Treasure - Reserve
Note: Considering adding +1 Buy to either when you play, when you call it, or both.
(Pre-Overhaul) Version 1:
$1
Once, at the start of your turn, you may set aside any number of Pennies from your hand. Set aside an equal number of cards from the top of your deck. Put one of the set aside cards into your hand per Penny you set aside, and discard the rest.
Cost: $2
Treasure - Reaction
Note: Based on market squire's wording suggestion.